Exploring bias in forensic DNA profiling | Dan Krane | TEDxDayton

[@RosannaMiller]

You're brilliant! Thank God for at least one objective man in there, fighting for good.

[@a1milan708]

voor de mensen die deze video moeten kijken voor engels dt is het antwoord: a= 2e bolletje b= 2e bolletje c= 1e vakje, 4e vakje en laatste vakje d= 2e bolletje

[@333thelc]

Thank you, amazing talk! Very easy to understand

[@sr69511]

I would love if there was a transcript for this talk. It got a bit confusing at times.

[@Treblaine]

Next to where the "like" buttons and share and "save" buttons below this video, to the right of all of those is a ". . . " click on that and you'll get a dropdown menu where you can open the transcript.

[@GeneticsLessons]

Oh, these type of problems are easy to overcome - just use DNA profile kit of a different producer that is using different primers sets. Then compare again.

[@krecikowi]

Exactly. Problem is that in those labs there are not many REAL scientists but many technicians... doing job. I'm molecular biologist and I would love to work on issues like this. How to get there? You know, I'm overqualified... with my PhD to get job in the lab like this...

[@karthikkumard8623]

@@krecikowi Your from India I think 🤣🤣😂😂

[@RockerProf]

Great talk!! Are those allele variations due to a different number of short tandem repeats in the alleles, or are those allele variations due to single nucleotide polymorphisms? Also, how do you know which allele comes from which parent?

[@Jack61]

Very well explained!

[@darksideofthemoon2348]

I'm 6 years late in watching this lol hey Jack 😎💕👋

[@Jack61]

@@darksideofthemoon2348 Hey!! 💘💘

[@Rowgue51]

Confirmation bias is certainly a major problem in this field. But the methodology itself is highly suspect as well. Most people don't realize that they are not actually comparing a full DNA profile and that they're using the STA shortcut. It's claimed that this methodology produces a result that will only match a sample with 1 in a billion people. But there is nothing that actually supports that claim other than wild speculation. There have been exactly zero studies done on how often we actually see people with the same repeating pairs, or more aptly enough of the same repeating pairs that an analyst could make a plausible case that their profiles match.

[@irishgirl1519]

Great informative video !

[@neallesimpson9663]

do these problems arise in electrophoresis?

[@DracenaMarge]

Right?

[@ahmedfarooq1137]

These issues may be resolved by following the established guidelines regarding subject.

[@theforensicinstitute367]

Sorry, you are just wrong.

[@tfb123]

What is meant by blind testing? If the question is, "Does Suspect DNA match Sample (Crime Scene) DNA?", how can it be answered without looking at the Suspect DNA? I can imagine providing multiple samples and asking, "Which of these samples matches the crime scene DNA the best". Is that what is meant by "blind"? Too bad that wasn't explained.

[@Rowgue51]

Blind testing in this context would mean that the person doing the analysis would not know beforehand where any of the samples were from. If you know sample A is from the crime scene and sample B is from the suspect then you may be prone to confirmation bias when comparing the results. In theory if you don't know anything other than that you're being asked to compare two samples then it should eliminate any confirmation bias and result in a more honest evaluation of the evidence. The main problem with that theory though, is that in the context of criminal investigations the lab is always going to know that they are comparing a crime scene sample to a suspect sample. Prosecutors don't send them samples to test for any other reason.

[@jofogarolli5379]

Can somebody explain if there is No DNA against the defendant and victim can a cps and police charge them.?.rsvp

[@roverbett3858]

police will still charge them to conclude the case and be labeled as heros, the so called experts r biased, and the jury is not smart enough to understand the flaws.

[@SarahDIrish]

👀

[@falseaccusationjapan5640]

This is horrifying! I was forced to give a DNA sample based on a false accusation with racial undertones here in Japan. After all the charges were dropped the police insist on keeping the DNA sample in their “suspects“ database forever for future matches.

[@ashishkishorchavan3766]

That's sad, but you can always file a case against the Japanese Government, according to the LAW.

[@MUZKF47]

Pointless vid and I’m a molecular biologist

[@victorlota9501]

guys pls help me for this question :After watching the video, write a short paragraph on how bias can influence the DNA profiling.