Are Polygraphs Accurate? | Does Phil McGraw Have Magic Lie Detectors?

This video answers the questions: What is a polygraph? How does a polygraph work? Can polygraphs actually detect lies? Can I analyze Phil McGraw’s use of the polygraph on the Dr. Phil show? Support Dr. Grande on Patreon: / drgrande
Faigman, D. L., Fienberg, S. E., & Stern, P. C. (2003). The Limits of the Polygraph. Issues in Science & Technology, 20(1), 40-46.
Suchotzki, K. kristina. suchotzki@uni-wuerzburg. d., Verschuere, B., Van Bockstaele, B., Ben-Shakhar, G., & Crombez, G. (2017). Lying Takes Time: A Meta-Analysis on Reaction Time Measures of Deception. Psychological Bulletin, 143(4), 428-453. doi-org.mylibrary.wilmu.edu/1...
LEWIS, J. A. 1. jlewis@taticalinterviewing. co., & CUPPARI, M. (2009). The polygraph: The truth lies within. Journal of Psychiatry & Law, 37(1), 85-92. doi-org.mylibrary.wilmu.edu/1...
Walczyk, J. J. 1. W. ed., Schwartz, J. P. ., Clifton, R., Adams, B., Wei, M., & Zha, P. (2005). Lying Person-To-Person about Life Events: A Cognitive Framework for Lie Detection. Personnel Psychology, 58(1), 141-170. doi-org.mylibrary.wilmu.edu/1...
Robin, F., Bonamy, J., & Ménétrier, E. (2018). Hypnosis and false memories. Psychology of Consciousness: Theory, Research, and Practice, 5(4), 358-373. doi-org.mylibrary.wilmu.edu/1...
Iacono, W. G., & Ben-Shakhar, G. (2019). Current status of forensic lie detection with the comparison question technique: An update of the 2003 National Academy of Sciences report on polygraph testing. Law and Human Behavior, 43(1), 86-98. doi-org.mylibrary.wilmu.edu/1...
antipolygraph.org/lie-behind-...
www.drphil.com/shows/540/

[@Eightsixseven23224]

Your consistent roasting of Phil Mcgraw through academic means is way more cathartic for me than you could imagine.

[@ninapearman]

George V - let me guess, this ain’t your first rodeo...

[@samellee7509]

@@ninapearman haha haha haha haha 😂 👍 👏

[@polly6336]

@@ninapearman haha! Nice one.

[@JulieSkinner777]

George V-Bravo!!!

[@pointsbeingmade7996]

Its a beautiful thing. Yet even better is to not slander anyone at all.

[@QuothTheRavenclaw11]

Dr. Phil checks under his bed for Dr. Grande every night.

[@N_A.-]

Aye FACTS

[@mgal6234]

Haha I love that!

[@samellee7509]

Awesome 👍

[@MassEffectGER]

Are you saying that Grande is a stalker?

[@samellee7509]

@@MassEffectGER nah. It's just that Dr. Phil has a way of creeping under people's beds

[@daveogarf]

Polygraphs are a CROCK! As you pointed out, they're props. There's a damned good reason why polygraph results are not admissible in a court of law!

[@samellee7509]

Yet their tired claims are used in talk shows to increase ratings. There are still outdated TV show producers that still obsess over the lie that is polygraph - they're just in denial.

[@jmdenison]

Exactly. There are no studies that show any link between line deception fraud and blood pressure heart rate respiration rate. It's absolute junk science. The best a polygraph reader can do is during the exit interview where they make up some nonsense about how they're going to give the subject a final chance to correct any lies deception or misinformation and then they see if the subject will spit out some kind of confession. But it's absolute all nonsense junk science and a waste of time. Furthermore it's not going to work on your true antisocial behavior type person because they think they're always right and they can lie right to your face and they think they're not lying. I actually have several depositions where people did that. And with a bit of study you can figure out how to fake out the polygraph test completely anyway. There are books and articles on it

[@PBG89]

I just learned that polygraph test are admissible in something like 22 states. I hope that's not true.

[@erikamccarthy1457]

I agree. Polygraphs are junk science and law enforcement use it to tell suspect they failed to pursue interrogation. 👍

[@markadams8452]

@@PBG89 it is true unfortunately, at least here in Indiana. I was just on a jury where the defendant was talked in to signing a stipulation of admission by the police, He took the polygraph, administered by a state police detective, and of course it showed “deception” and it was showed to us, the jury. Thankfully I was on the jury and was able to explain to the rest of the jury how polygraphs are pseudoscience.

[@nicolasmansilla8589]

It reminds me of a quote from "Anchorman": "They've done studies, you know. 90% of the time, it works every time." Thanks Dr. Grande. (Requests: Albert Fish, Chikatilo, Tony Soprano).

[@KennyRider137]

Crazy People, What About Bob?

[@KeKKi]

I believe in Anchorman he says "60% of the time, it works every time" 😅😅 Even more bananas

[@jackbean213]

They exist to scare ignorant people into confessing to crimes.🤷🏼‍♀️

[@DreamingInTechnicolor]

I agree wholeheartedly.

[@ANGEL-eh6pd]

IM SURE A SOCIOPATH, OR NARCIST COULD PASS, BECAUSE THEY HAVE LITTLE EMOTIONS AND NO EMPATHY.

[@ANGEL-eh6pd]

THE COPS ARE WORSE THAN THE CRIMINALS. READ THE PENAL COLONY BY FRANSE KAFKA. ITS PHILOSOPHY.

[@_DiJiT]

@@ANGEL-eh6pd why are you typing in all caps

[@mr.l8527]

@@ANGEL-eh6pd You could pass the test while being deceptive. You could fail it by being honest. All it primarily reads are bodily vibrations. An honest examiner will actually warn you to make sure you aren't "gassy" when taking the test, as the rumblings of your stomach or "passing gas" will give a false positive/negative. That's why it isn't admissable in most courts anymore. It's as scientific and accurate as a Scientologist's "thetin reader". That's why innocent people have been convicted by it's "readings" and why guilty people have gotten away with crimes by it.

[@daytwaqua]

One of my favorite MadTV sketches was Michael Mcdonald portraying Phil and saying, mid-sketch, "We have a saying back where I come from: I'm not really a doctor.".

[@Nathan-jq1uw]

I think in that Mad TV sketch Phil said he was from Pumpkin Nuts Texas.

[@DreamingInTechnicolor]

I think the findings of guilt or innocence depends more on who’s reading the “results,” than the “results” themselves.

[@samellee7509]

For many obvious reasons, psychopaths are able to pass polygraph tests. One egregious reason as to why the polygraph is a pseudoscience.

[@samellee7509]

@m norton buswell Yes. Agreed. They're about as scientific as reverse speech.

[@judywright4241]

S. D. ---It’s important to remember the ‘results’ are emotional responses, which is why the Green River Killer passes his own test, he had no guilt or feelings about the murders.

[@WynneL]

@@samellee7509 Conversely, as someone with severe anxiety issues, I am chilled when I think of what would've happened if I were ever mistaken by police for a murderer. A responsible interrogator versed in body language and microexpressions would identify me as innocent, but those are few and far between. A polygrapher, however, would ignore a sociopath's calm results and take my anxiety spikes at important questions as clear signs of guilt. Polygraphs are so damn stupid. They measure emotionality. If anything, maybe we should reverse results and take passing a polygraph as a sign of sociopathy.

[@Miacorr]

@@WynneL You make an excellent point about polygraphs measuring emotionality.

[@azimuth361]

I'm a retired paralegal. Toward the end of my career, we avoided calling eyewitnesses at trials if we had forensic or video evidence. Have you considered doing a video on whether eyewitnesses are reliable?

[@zachmorgan6982]

The answer is overall nooo

[@brucejohnson9696]

Statistically, mistaken eyewitnesses are the #1 cause of wrongful convictions. (Innocense Project)

[@jdwilliams5244]

I was in law enforcement for 36 years, and 11 of those years I was as an investigator and certified interviewer. If you separate three eyewitnesses before they can talk to each other you will get three different statements most of the time. Most people see their surroundings differently. As you question them, they are trying to fill in the gaps they remember. I never considered an eyewitness as factual evidence.

[@maryfrancesbeckerhaggerty5353]

@@brucejohnson9696 Absolutely

[@elizabethshaw734]

My bucket list contains the ability to sit down and have a face-to-face relaxed conversation with Doctor Grande. :-)

[@cherietillapaughhott1012]

Me too!

[@ronelarderne6713]

Thank you so much for this. I have been traumatized for years after being accused of theft at work. I submitted willingly because I really believed that this machine would exonerate me. I was told that all of top management were being tested, only to find out after my firing, that myself and my assistant were the only ones targeted. This has had a major influence on my confidence and ability to move forward. The embarrassment is something I will never live down. To see this device being used by a man (who is supposed to be all about mental health) is sickening. Thanks again.

[@xrisku]

Man, that sucks!!!! So sorry that happened to you.

[@MakeupMobster]

You were fired over a polygraph? That cannot be legal!

[@ronelarderne6713]

@@MakeupMobster apparently in South Africa it is?

[@chloeoflaherty8136]

You inspired me to study psychology! I’m starting my first term in September.

[@monicasieber2285]

You're going to love it!

[@annemiekvdbos]

Cool!! Good luck!!👏👏

[@melaniedelaware7500]

2 years later, and I want an update!

[@sashachitownvillegas6850]

good luck!!!!👏

[@sicKnofoS]

“So I guess we’re supposed to believe the test is 90% accurate, and the remaining 10% is accurate as well.” Your delivery was gold. 😂

[@lauriLokkeni9002]

Hi Dr Grande You have answered many questions I had on the polygraph test, and it’s accuracy. I’ve always wondered why they were not used in a court of law when people like Dr Phil advocates for them so heavily. Thank you 😃

[@mcd5478]

I’m not sure what this says about me but I get a real sense of satisfaction hearing you expose Dr. Phil ‘s shady practices. And of course the polygraph information was excellent too! 👍🏼

[@annemiekvdbos]

I love how he calls him Philip McGraw 😂

[@elisamastromarino7123]

🤕 It gives me a headache, too, doctor. I honestly believe that it's a legal bullying technique. Phil McGraw _does_ propagate bullying, humiliation through exploitation, etc. I literally cannot endure him. That said, I believe that if lies are consistently seen on polygraph test questions, there's probably something amiss there. I.e. Chris watts, Darin Routier, et.al Thank you, Dr Grande. 👍🌹

[@tuck-brainwks-eutent-hidva1098]

He's like Letterman minus 20 IQ points. McGraw, that is. Dr G. is like Letterman + 20 EQ points! (And probably a few IQ pts. too.... 😉)

[@lynngibson5633]

He would be nothing without Oprah. He’s a fraud

[@zeusmasterson4117]

They aren’t worthless, for sure. Just very limited in usefulness.

[@Mikey_Sea]

Examiner: "Did you kill so and so?" In subject's mind: "Do you like eating liver?" Answers out loud: NO. Test over.

[@RHatcherMD]

ME: Yeeeees! With some Fava beans, and a nice Chianti! FSPSPFPSPFPSPFPPSFPSPFPPS!!!!

[@monicapyle]

Lol I've often wondered if that could work too

[@Mikey_Sea]

@@monicapyle Please don't ever find out, sweetheart.

[@monicapyle]

@@Mikey_Sea haha I hope I'll never have a reason to test out the theory!

[@jennahopkins8189]

I routinely put on one of your video's while I'm trying to fall asleep. I always enjoy the subject matter, so it gives me something to focus on. Plus you have a very calming voice to listen to. And here you are with a new video just in time! Lol.

[@christa7773]

Omg I do this too! 😃

[@annemiekvdbos]

I do this to!😊 Also when I'm nervous or anxious, his calming voice always helps!

[@WoodlandPoetry]

Great idea! I don't think I'll pick one of the serial killer ones, though.

[@WoodlandPoetry]

Great idea! I don't think I'll pick one of the serial killer ones, though.

[@hollychandler4567]

I do the same thing. I love his subject matter and how articulate he is. His voice is so smoothing and takes me off to sleep

[@existenceispainforameeseeks]

I just...I cant even explain how happy it makes me to hear some one scientifically dismantle Phil Mcgraw. Bravo!

[@pattyjoyce4461]

You actually brought a tear to my eye in the last video about the dr. phil show, at then end you stated how the mentally at risk people need our protection, not to be tricked. So true.

[@gyver8448]

I once heard someone describe polygraph tests as a good way of getting someone alone in a room without their attourney present. That's pretty much their only use.

[@Ravenzpeak]

Count backwards from 700 by 13's....!!!! I couldn't even do it starting from 100 without a piece of paper. LOL

[@antiquemacabre]

The best pre-polygraph interview I've ever seen is CBI Agent Tammy Lee interviewing Christopher Watts. Pure gold. And, I think, a perfect example of using the polygraph as an interrogation tool rather than it being a "lie detector." Great video as always, Dr. Grande.

[@Jen18812]

"This kind of reasoning really gives me...a head ache." Dr. Grande gold. :)

[@jeanettewaverly2590]

I hope to god we’re not going to be tested on this material.

[@BrainsApplied]

Aha, I knew they weren't trustworthy but I never knew the details. Thanks!

[@rejaneoliveira5019]

Superb explanation on polygraphs! Thank you for using this platform on YT to debunk nonsense. Your expertise, knowledge and intelligence are very much valued. Thank you! ❤️

[@dekar820]

I have to say that the level of sarcasm and humour on a scale of subtlety is epic! Thank you!

[@michellerenee5028]

Its fun to have that talent.

[@dekar820]

@@michellerenee5028 I agree! 👍

[@A000803323]

Exceptional overview of polygraphs! You should do a video on using fmri's as lie detectors. From what I recall they were much more accurate because when people lie the creative sectors of the brain light up, and when they simply answer from memory, the regions of the brain associated with memory show more activity. At the time I learned about this, there wasn't all that much research on this (always hard to get time on an fmri), so it would be interesting to know if the science has progressed much further. I'm curious what kind of countermeasures one could invoke against this kind of test.

[@evelynwaugh4053]

That sends a distinct chill down my spine. A dystopian police state with the power to see the truth, where our Constitutional rights are a dim memory should be a topic for science fiction, not reality.

[@tuck-brainwks-eutent-hidva1098]

Thinking about talks I have seen by Dr. Daniel Amen, as well as Dr. G....Best countermeasures would probably be head injury 🤕, psychopathy 😶, and/or red wine 🍷! Ooh -- or antidepressants.... that's a depressing thought ☻.

[@jurnalicious1]

Hey Dr. grande! I was wondering if you’d consider doing a video on the psychology behind religious/cult leaders that orchestrate mass suicides. Such as Jim Jones of Jonestown. What is the psychology behind why they do it?

[@Patprond-mj2es]

He did a video on Jonestown..

[@michellem3982]

l find the Dr. Phil show is almost becoming like the old Jerry Springer show as he has guests on with the most dramatic problems so the audience will react which is not a safe place at all to discuss their problems. That is like going in front of an auditorium full of strangers and talking about your most personal problems and opening yourself up to their reactions. The lie detector makes it only worse on the guest making them only feel more anxious and then Dr. Phil uses the results against them for reactive purposes. He is not a real Dr. He has a Doctorate but he is not even a practising Dr. which l find even more deceptive to the guest. The worst thing l find he does is use anything, polygraph, what the guest says or the other guests as witnesses have said, that he is a Court Dated Reporter and either they do what he suggests or what has been said or done will be used against them once the show is over...What a terrible way to seek out help for an emotional/personal problem.

[@h.borter5367]

I'm just waiting for the guests to start throwing chairs and fists🙄

[@h.borter5367]

@mondblume63 I've listened to his true crime podcast and that's all that he hawks is her stupid face creams. Whenever I look at her, I can tell no face cream does THAT. All surgery.

[@helenjohnson7583]

Dr. Phil is a crook.

[@mikevanin1]

Are you sure that most of his guests aren't paid actors?

[@Courtney-pn5lr]

I've fallen down the rabbit hole of watching Dr. Phil videos recently. The dramatization of the show definitely has a Jerry Springer or Maury vibe. Not going to lie, it's entertaining. I feel bad for the guests though when the audience laughs or reacts to them. Definitely not a place to go for actual therapy/ treatment for personal problems.

[@billhildebrand5053]

Comment 197: The polygraph test was named after Dr. Wayne Polygraph in 1867. Great job as always Dr. Grande. 😄. Nothing amiss about your explanation. 😀

[@pixieonthemoon8633]

"Does Phil McGraw have magic lie detectors?" LMAO I LOVE this!

[@Knowbody42]

Even if they get it right more often than not, they're still nowhere near accurate enough. That's one of the big issues I have with some of these reality TV shows. They overly rely on the polygraph, and take it as gospel. I would say they have certainly ruined lives because of it.

[@sarahanne2512]

I’ve been binge watching your videos lately and I love when you use examples from Dr Phil’s shows in your videos.

[@TheMerryPup]

And the fact that they're inadmissible in court should tell you something. Pseudo-scientific nonsense! Thanks for covering this.

[@amicamio2435]

Thank you for this video. I’m going to share it with a friend with whom I had many discussions about how polygraphs are not accurate. You explain it in a very understandable way! Love your content

[@frankbauerful]

Polygraphs are as effective at detecting lies as defibrillators are at restarting stopped hearts. It's a movie thing, but many people believe movies.

[@0dious]

Underrated comparison. Tho, I saw movies accurately portraying polygraphs, but I'm yet to see one that extends that same curtesy to defibrillators. That "breaking the beeeeeep" scene is just too good to pass, I guess.

[@judepower4425]

That's a ridiculous comparison: I can assure you that defribillators DO restart stopped hearts, in my case 3 times, also once by CPR.

[@Tanrna]

@@judepower4425 You might wanna ask your doctors what actually happened because defibs aren't used on flat line patients. You need a dysfunctional pattern for this to work. If your heart completely stopped only cpr is going to be effective.

[@DeadManSinging1]

@@Tanrna Uhhh... I heard they don't practice CPR anymore because it was also a thing that did more harm than good

[@Tanrna]

@@DeadManSinging1 How does it do more harm than good? When CPR is used a patient is in cardiac arrest, which means that if nothing is done you are dead within a couple of minutes. I don't know where you heard that but it is false. Edit: then than

[@r.chrism.d.3001]

All this goes against what thousands of expert professionals in polygraph examinations espouse. As a trained basic scientist for over 30years and familiar with Dr. Grande’s resume of science-based youtube videos, I sincerely value and trust his opinions. Unfortunately, due to my other beliefs about Deep State atrocities. i am a conspiracy theorist. So what do I know...! A gutsy and amazing video. The learning never ends.

[@leebarnes655]

Never ascribe to malice that which can better be laid at the feet of total incompetence

[@sonjebianca2483]

I always learn something new from your videos. Thank you. I would love to hear your comments regarding the mental state of severe family child abuse cases like the Turpin family. It always puzzles me when you have both parents and sometimes aunts and uncles involved.

[@The_Tortoise_and_the_Hare]

Also, this shade of blue always looks very good on you, it brings your eyes out! If that is the right way to say it...

[@SusanHL]

Interesting coincidence - I just watched this today (immensely informative, as always), and a couple of days ago I was listening to this true crime podcast I never miss called "Real Life, Real Crime" - it's done by a couple of retired Detectives who worked in Livingston Parish, Louisiana at the same time our family lived there. One of the guys, Detective Woody, just put out an episode called "False Positive" about a time he got just that when he was relatively new at administering the polygraph. He basically summed up by saying it's really only useful as part of a larger interrogation strategy, and that it should never be used in lieu of solid investigative skills. I always assumed it was only as good as the person administering it, but this video pretty much makes me question the whole thing.

[@cindyrhodes]

Thank you so much. Dr. Grande's explanation should be used to help get this medieval practice stopped!!!

[@MaxZed1101]

I've noticed you always refer to him as, "Phil McGraw" in your videos. I love the professional shade throwing.

[@tomothybahamothy]

I hope a lot more people see this. It's so important to understand how we can defend ourselves from false incrimination, great video

[@julietamalo6881]

Polygraph is one measure to detect whether someone is lying or not under an interrogation. However, we also have to examine the general livelihood of the involving parties to understand the whole context of the situation. Thank you for the insightful explanation and God bless!!

[@galedivaris6487]

Thanks for the great topics you cover in your videos. Pleased you clarified the widely held, but false belief of polygraph tests. Truth always defeats fear. And polygraph testing does bring concerns for different reasons. Looking forward to your next video, Dr Grande.

[@Catchmee24]

I’ve taken a few polys while only telling the truth. I still was accused of lying. What was particularly perplexing was my physiological responses all felt the same to me, so my “lies” seemed to be selected at random. The only way I can see the test working is it’s just being used as a prop to help the interviewer with questioning.

[@MelissaDale]

I'm a big true crime fan - but it always breaks my heart hearing my favorite podcasters say things like "of course a polygraph is not permissible in court.... but they failed the polygraph!" as if it's still evidence of guilt. It shows that people know generally that a polygraph is "unreliable" but still think it must be ok a lot of the time. I would love to hear your take on other lie detection approaches. For instance, I listened to a lot of TED talks and one of them claimed that if a story is a lie, the speaker will use fewer distinct words, and that that could be used to suggest a true story from a memorized story.

[@The_Tortoise_and_the_Hare]

I wonder how I'd do in regards to a polygraph test having social anxiety, would that be taken into account? Like I'd be all nerves in a situation like that, and also having people think I've done something wrong even when I haven't really stresses me out!

[@susiehopper3299]

Once again, Dr. Grande, spot on❗️I have always considered lie detection a pseudo science. It upsets me for PHIL McGraw to use it on his show to determine guilt or innocence for people accused of some very disturbing behavior.

[@WhiteSuperMemeist]

I remember the first time I took a polygraph for employment and was told I was "breathing wrong" and then told how their "supervisor is watching the room through the camera and thinks you are lying. I had to tell them to give you another chance" I knew it was basically a complete farce at that point and it made me calm down that their actually isn't someone reading my mind.

[@NatalieSterrett]

Love it when you bring the epi concepts!

[@erust9465]

Hi Dr. Grande, Interesting! I’ve never heard the workings of the polygraph test explained this well, and so it makes sense why it can’t be used in court. I have personal experience in being tested. At 14yrs old, 4 blocks from my nice suburban home, I was attacked by a complete stranger. This was in 1977, so very different times in respect to the way society and police handled attempted rape cases. (And murder as I was almost killed). In those days, women (and teens) were treated as if “they must’ve done something wrong” to have that happen. Or the questioning started with an assumption that the victim knew their attacker. Even though this was right in the middle of what I call the Serial Killer hey days, law enforcement approached it this way! Shocking now...not back then! At any rate I was questioned for hours, even though I was beaten bloody. The police were convinced I was not telling them everything because I got away. I had to go back for more questions a couple of days later. Mind you by that point the entire left side of my face and eye was swollen to monstrous proportions and I was black and blue from head to toe... the approach was still that I was not being honest! So it was then presented I take a polygraph. I was mad as hell, and asked why. I was told if I did, it would then require a suspect to take one as well. I wanted that guy caught, not so much for me at that point but I KNEW this wasn’t the first time this guy did this. I KNEW he’d do it again! Next time that girl might not be as tough as I was. Next time that girl may be killed, or have her life ruined. So my parents took me to the STATE PRISON for the test! Can you believe that?! I remember some of it, primarily the examiner asking me to lie, give him a fake name etc. it was scary enough being at the State Pen let alone being hooked up to a polygraph machine! Anyways, the questions were all about if I knew this guy, was I flirting with him, what I think I DID wrong.... can you imagine that happening today?! LMAO the examiner was lucky I didn’t give HIM a good slap! So when it was done, we came out and the examiner announced to me, my parents, and the detectives on my case that I “passed with flying colors”. Of course I felt vindicated. Vindicated and DOUBLY mad at the detectives. This was a month after I was attacked. God only knows how many other girls were attacked at that point! Needless to say the police never caught the guy. That’s when I started reading Psychology books and watching every true crime show I could find. ( No therapy for me, not back then. I was my own therapy, hence the books). Finally I forced myself to walk through where it happened at sunset, which was the time it happened. My own exposure therapy, I wasn’t going to let this one bad incident paint the rest of my life. You gave such a good explanation of the intention of the polygraph test, it really made sense why things went the way they did, and what the police actually were doing. Haven’t thought about that in years, and it doesn’t bother me in the slightest now. Thanks SO much for this video, and such a simple to digest explanation to the polygraph and it’s purpose. Looking at it from my vantage point, I do think it’s a useful tool for law enforcement. That being said it’s a tool. It’s not the beginning or end, but a tool. Keep the awesome videos coming! Thanks again!

[@cbsg5861]

I love how you call him with his full name instead of Dr Phil. He ain't a real doctor anymore!!

[@juliameyer10313]

Was he ever? Genuine question, I only watched a few clickbaity clips of his show. I didn't even know polygraphs were an actual thing people in our day and age use. I mean, we certainly don't where I'm from.

[@ignominius3111]

JCM sounds like live in a bubble.

[@juliameyer10313]

@@ignominius3111 it's not about a bubble. Polygraphs tests are not used nor allowed as evidence in Germany. And oh wonder, we don't really watch Dr phil here so I really didn't know that some people still trust those very very delusional methods Btw. I did some research, he has a PhD but not a license to practise and he doesn't need one because his show is entertainment, not actual help.

[@georgebalsamo1011]

One could get more help from Quick Draw McGraw.

[@adrienneadetti1223]

He has a PHD

[@Tmanaz480]

Can you do a segment on all the other "lie detection" techniques, like body language, etc?

[@The_Tortoise_and_the_Hare]

Lol, nice! I'm going away for a long weekend with bad service, so it is fun to see a new video up before it's usual time!😀👍

[@nektulosnewbie]

I always got the impression seeing him whip out the polygraph test results that it was just one step in a chain of actions to put pressure on people to see what he could flush out them. Claim whatever says are lies and then see how they act to see how further act. There could also be another factor far simpler than that. He likes to throw his weight around and this is just another way to do that through the guise of a test.That's something which lines up with your previous suspicions that his show has a great deal more to do with him and his ego than it does with any beneficial reasons he states for doing it existing (educating others on mental health, etc).

[@adventurebabyboomer7318]

Good information. Polygraphs are complicated and I believe one needs advanced knowledge and training to operate one. Let alone to understand the process. Thanks for bringing this to light dr. Grande.

[@2lynnw]

Good morning Dr Grande. What a lovely surprise to wake up to. Breakfast (UK) time here. 💕🇬🇧

[@ANGEL-eh6pd]

THANKS FOR THE GREAT VIDEOS. QUARENTINE HASNT BEEN BAD, I DECIDED TO GO BACK TO COLLEGE AT 55. IVE LEARNED SO MUCH FROM YOU. THANK YOU. Great analysis. IM AN IMPATH, AND I KNOW WHEN PEOPLE ARE LYING, IF YOU OBSERVE THEM TOO. I HEARD THAT, IF YOU ARE iIN A GREAT DEAL OF PHYSICAL PAIN, YOU COULD EASILY PASS ANY LIE DETECTOR TEST. HAVE YOU EVER SEEN THAT HAPPEN .?

[@sherrihinton8567]

I just watched about 4 of your videos and your on again. Yea

[@Positivevibes-tq5mg]

Great video Dr. Grande. Very informative. Thanks

[@toreoft]

Some people react strongly emotional to being falsely accused; get higher heart rate, breathe faster, sweat, get angry, get scared, defend them selves in every way. How do they score with a lie detector?

[@rogerknights857]

Badly. Read a book called “A Tremor in the Blood.”

[@dafni10565]

Impeccable analysis Dr. Todd!! 💎

[@fitnesswithsteve]

“I’ve got a hot date tonight.“ ❌ “...a date.” ❌ “...dinner with friends.” ❌ “...dinner alone.” ❌ “Alright…” “...I’m going to sit at home and ogle the ladies in the victoria secret catalogue.” ❌ “... ... ...Sears catalogue.” ✅

[@HumanimalChannel]

Hey! Lots of women like men with a place to live,who are literate, and have a sense of humour, so, p'raps you will get a date out of your comment ;)

[@steves1015]

Stephen Mason aww poor Moe ;)

[@davidrose2899]

You may find this funny as well kzbin.info/www/bejne/r2q5gmN4hr2Vh6s

[@tuck-brainwks-eutent-hidva1098]

Alright -- we're on lockdown; I can't even go to the mailbox.... 😷😉

[@MaricaAmbrosius]

So you can use it to tell the future?

[@yusmiffins]

the shade in the title im dead

[@polly6336]

I love Dr. Grande's subtle shade!

[@ReluctantPost]

The science grads running the YT channel, SciShow, have a great video summarizing research outcomes in lie detection techniques of all kinds.

[@aramfingal5180]

The problem with studies claiming to characterize polygraph accuracy, either in some absolute sense or as a matter of false positives and false negatives, is that you need some gold standard of truth to compare the polygraph results to. For example, to be reported as a false negative, a person would have to lie during the examination but be judged as telling the truth by the examiner. But how do the researchers know that the person actually lied on the examination? It would seem that the researchers must have Dr Phil's magic polygraph with no false positives or negatives of its own! Furthermore in order to be approved by an IRB the studies can't really duplicate the circumstances of a typical polygraph situation, where there are high risks to being identified as lying.

[@catasrophieGrrl]

I'm beyond happy to see so many true crime and mental health/ science analyst, influencers, educating the public that lie detectors are lies themselves. That grief cannot be an effect signal of guilt/innocence. And to also get an attorney, guilty or not. These are important. Thank you!!

[@blowitoutyourcunt7675]

Didn't Penn and Teller do an episode of Bullshit on polygraphs? That all one needs to do to distort a polygraph is to squeeze their vagus nerve? Cheers all!

[@kaym.2854]

I agree with your analysis. Plus 27% is way too high! I never really thought or did any type of research on polygraphs and always assumed they were accurate. Thanks for sharing.

[@essentialnature700]

My therapist had my ex take a polygraph and 8 affairs were revealed. It definitely gave me clarity.

[@michellerenee5028]

Oh my

[@kombuchamushroompeople]

your videos has teached me a shit ton of stuff i thought i knew. in general love your videos and content

[@waltlewis9194]

Beautiful info Dr. Grande! Very helpful video! Thank You!

[@vickikay25]

Doc, don't you know that Dr. Phil knows EVERYTHING? Just ask him! Love your channel!

[@lornaginetteharrison7168]

I’m absolutely convinced that I could - & _would!_ - fail a polygraph test, even though I was 100% telling the truth! I don’t know whether it’s my high tendency to become extremely anxious in stressful circumstances, or more probably some kind of mental hang-up from a really quite cruel maths teacher I had for 2 years at school who’d ask students at random a question, & if they didn’t give the correct answer immediately he’d make fun of said student, & encourage the rest of the class to ridicule them too - hence, if I’m put on the spot, I can’t answer a maths question to this day if I’m put under such pressure, when at any other time I’d know the answer straight away.😬 That’s also a reason why I’d be totally rubbish at counter measures, mentally counting backwards in blocks of 13! When I had my tonsils removed as a kid, as the anaesthetist was 'knocking me out', he asked me to count backwards from 100, subtracting the number 7. For me, _that_ was the most traumatic part of the whole operation! In Autumn last year, I was informed (at what I thought was going to be a routine hospital appointment) that I actually needed urgent major orthopaedic surgery on my arm, which I totally wasn’t expecting. I was booked in for a couple of days later. I should have been massively concerned about the general anaesthetic, the operation itself, if it would be successful, how much pain I’d be in afterwards, & how long my recovery would take. But you know what was the one & _only_ thing I was worried about? That an anaesthetist would ask me to count backwards subtracting numbers again! All these years later & maths [sorry, _'math'_ for those in the US!] is _still_ my nemesis! Curse you Mr. Evans, you terrible maths teacher! [BTW: In the end, I luckily wasn’t asked to do _any_ mental numerical gymnastics this time as I was knocked out...phew!]

[@tuck-brainwks-eutent-hidva1098]

I will add my curses to Mr. Evans -- nasty abusive. Minus the ridicule, I had a similar science teacher. She was far too cold and detached to commit to the emotional engagement of ridicule! 😬 Her tactic for driving home the importance of accuracy and precision in scientific recordkeeping was to present a near-daily written pop quiz asking us to write, verbatim, the contents of one or another memorized law of applied physical science -- exactly. A slightly changed word or ending, misspelling, or comma or apostrophe, etc. out of place -> F. (A/F, not pass/fail.) Already having been, in the 8th grade, a burgeoning perfectionist, I was deeply committed to my GPA (grade point average), if not to science! I am a brutal perfectionist about writing to this day -- you should see my proofreads & edits on my KZbin comments 😅. Google probably could diagnose me. (I wish I were more of a perfectionist about other things!) I'm glad your recent anesthesiologist didn't make you do mathS 😉! I hope your arm is better 💪....

[@hankvandenakker4271]

MY FANTASY: DR. PHIL HAS DR. OZ ON HIS SHOW, THEN DR. GRANDE GIVES US A BREAKDOWN . THANX AGAIN, DR.GRANDE

[@frankenz66]

I have seen people ( 1st cousins) I grew up with that could lie, big, and not even blink an eye or waver. I never could do it, but their real lives were so terrible, compared to mine, I think in retrospect, that their reality was too painful to face so they tried their best to live in the lies they spouted almost continually. My older siblings have since had long talks with these cousins, and that is what they have ultimately admitted. Severely abusive and alcoholic father they had to deal with. Living in lies was more sane than dealing in reality. The things people get stuck in ( kids can't help) , or put themselves through 😑 Thanks!

[@stuartwashington2658]

This is one of the great internet PSAs. Polygraphs are inadmissible as evidence and for good reason. This video actually taught me another dimension of the polygraph: the role of intimidation, the fact that the subject is meant to buy into the polygraph's ability to detect lies, and the test administrator's role in maintaining that false impression.

[@kimroy6640]

Thank you very much for doing this video. I have seen Dr. Phil episodes with his polygraph guy. He always appears very intimidating.

[@samellee7509]

As usual, Dr. Grande, you never disappoint! And, I too, was getting a headache from the questionable use of the lie that is the polygraph. Can you talk about the *Jenny Jones Show* and the episode, "Same-Sex Secret Crush" that ended in tragedy. If you can especially cover the lawsuit against the show's producers. It would be interesting to get a different perspective on whether Jenny's reaction indicates a small dose of not taking full responsibility of the consequences (a bit of narcissism and/or psychopathy??🥺) and the "alleged-not-so-alleged" negligence of the show's staff. Thanks a bunch!

[@cygnetteable]

Hello Dr. Grande! Thank you for the kind of work you do and content you publish. I would love to hear your analysis of some of the things happening surrounding Colleen Ballinger, or really any influencer that is perhaps crossing parasocial lines between themselves and their young viewers. It worries me very much, and feels like uncharted territory. Always Alayna on KZbin has been speaking out about some of it, and it's been wonderful. Thank you again!

[@jamesw17]

Yay another Dr Phil burn vid! He's such a pseud. Speaking of the veracity of lie detector tests, this got thinking about e-meters and Scientology - could you please do a profile on L Ron Hubbard? Now there's a strange character! That being said, publicly discussing Scientology in a way that isn't fully positive and is outside of their control has risks.

[@DeyvsonMoutinhoCaliman]

Very informative. I think it can be valid as just a small evidence to corroborate others. Many evidences only point weakly to a suspect, so maybe a polygraph can be one of those weak evidences to amount to others, but never to define a guilty person using it alone. Maybe it can help to direct an investigation, but never to end it.

[@Tmanaz480]

Another technique is for the examiner to meet with the person who hired them and ask what they think about the subject. For example an employer is trying to find out which employee stole some merchandise. The polygrapher will first ask the owner who they think did it, and, surprise, that's the one who's proven deceptive.

[@zappawench6048]

I love your logic and reasoning concerning the claim that the machine is only 90% accurate, and yet it never gives a false positive or negative!

[@Ricardo-ft7ed]

I know a retired 30 FBI polygraph examiner. He told me (unsolicited) to NEVER take a polygraph test.

[@banjoist123]

I'd read from another source that the polygraph is literally only about 5 points better than tossing a coin, and yet people lives, futures, and careers can hinge on them. I had a roommate once that just got stoned before taking one and passed with flying colors, despite the fact he was lying his face off.

[@lilyanne7528]

Beautiful. Thank you for posting this. Thank you.

[@desahnwelch5305]

Hey doc love your videos, I think you should do a video about body dysmorphia. It would be nice to hear your thoughts on the topic.

[@arbitrarydesign379]

Well done. I really enjoyed this.

[@mathewrenouf5246]

Thank You for this tutorial Sir. Here in New Zealand (just east of Australia), we only have ONE polygraph examiner (that I know of.) I never could understand though why the police etc would NEVER consider them to be admissable, until now. I also heard on Dr Phil that if someone BELIEVES a lie enough that they are telling, it would almost CERTAINLY come back as "Verdict: Truthful". I actually did believe that these machines were entirely trustworthy, but now I understand why they are REALLY not. It's unfortunate in a way, since, if a person in a Court has NO witnesses, but are being UTTERLY 100% truthful and are innocent of a crime that they did NOT commit, then, the $100 billion question is, "WHAT ELSE CAN THEY DO to prove themselves 100% absolutely and unequivocally INNOCENT??

[@johnmassoud930]

Thanks for posting this video, I've long been concerned about how a lie detector can detect certain things, and people with nervous conditions or who perspire alot may be railroaded into confessing a crime they never did commit

[@cindyrhodes]

This is my favorite channel!!!

[@mayrawellington1130]

Thank you Dr. Grande! ❤️

[@Dancingonthesun]

"This machine will catch liars, it will also catch over a quarter of everyone else, but that's a sacrifice we are willing to make" That reasoning is insane, I bet none of their friends or family would ever be subjected to a polygraph. Disgusting.

[@CK-jd7wo-test]

I lost an opportunity for a job which required a polygraph as a condition of employment by "failing" the polygraph. Everyone I knew who passed the polygraph had lied, and I was the only person who failed. And I didn't lie. Total crock.

[@anonymouschange287]

“Imagining ones self falling if a building. So let’s move on.” Me: “Wait what?!”

[@tuck-brainwks-eutent-hidva1098]

I'm still trying to count backwards, by 13s, from 700.... 🥴

[@onemoremisfit]

Polygraphs are pure bunk. I have undergone 3 of them. The last of those was at Reid Polygraph in downtown Chicago. The location was a very impressive high class building. This was 44 years ago and at the time Reid was considered the gold standard authority as they were the pioneers of polygraph, and I was at their national headquarters supposedly getting the best test money could buy. Fortunately, someone else was paying for it. It's a long story how I got there, but the whole thing was pure sophisticated bunk. It's astonishing to me how many intelligent people, many of whom are much more educated and well read than I am, who will casually mention or allude to a "lie detector test" in a serious discussion of a given topic, as if such things are reality. We have also seen public figures embroiled in some controversy who have taken a 3rd party polygraph and claimed because they supposedly passed the test that this supports their claim of innocence. There is NO SUCH THING AS A LIE DETECTOR TEST. Have people ever given any serious thought to how our civilization would be transformed if there were machines that could actually detect lies? Polygraphs are based on pure junk science. There is no reliable, repeatable, measurable correlation between physiological data such as respiration, heart rate etc, and telling a lie. And worse yet the results must be subjectively interpreted by another person. The machine itself does nothing but track and record the bio-data. Police depts use polygraphs for screening officers. There is a cop on a YT channel I've seen who talks about this as if it is legitimate. I told him my story and he scoffed and deflected ad homenim against me. I've heard the FBI and CIA regularly polygraph their personnel and swear by it. There are also employers that use polygraphs to screen for sensitive jobs. Every time I enter an online discussion to say there is no such thing as a lie detector, I'm dismissed and ignored. The sad fact is we as a society have been gaslighted into believing this nonsense. Not just the dummies but smart people too.

[@SaltyMinorcan]

polygraphs never worked on me because I had a pronounced heart murmur. The dude would say I was lying when giving my name or address. Reagan outlawed them for employment.