History of Intelligence Testing (Intro Psych Tutorial

www.psychexamreview.com
In this video I briefly describe the history of intelligence testing including the work of Sir Francis Galton, Alfred Binet, Theodore Simon, William Stern, Lewis Terman, and David Wechsler. I also discuss the concepts of mental age, ratio IQ, deviation IQ, and the ability of childhood IQ to predict future outcomes.
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[@PsychExamReview]

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11:50 "Mrs. David Wechsler"

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[@jasongray318]

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[@susantaylor-alonso471]

You make no mention of the ethical issues associated with Terman's work; the promotion of eugenics and the selection bias associated with his research for example. It's important to offer a balanced view of these researchers' work by also including any limitations to their research.

[@tanmayredij9171]

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[@PsychExamReview]

I'm glad to hear that, thanks for commenting!

[@onlypsychology277]

THE WECHSLER SCALES OF INTELLIGENCE Wechsler consistently defined intelligence as "the aggregate or global capacity of the individual to act purposefully, to think rationally and to deal effectively with his environment" (Wechsler, 1958, p. 7). He also emphasized that intelligence involved more than intellectual ability, although "the capacity to do intellectual work is a necessary and important sign of general intelligence" (Wechsler, 1958, p. 12). General intelligence or, more precisely, intelligent behavior depends on such variables as "persistence, drive, energy level, etc." (Wechsler, 1949, p. 5). Beginning in the 1930s, David Wechsler, a psychologist at Bellevue Hospital in New York City, conceived a series of elegantly simple instruments that virtually defined intelligence testing in the mid- to late twentieth century. Origins of the Wechsler Tests: Wechsler began work on his first test in 1932, seeking to devise an instrument suitable for testing the diverse patients referred to the psychiatric section of Bellevue Hospital in New York (Wechsler, 1932). In describing the more reading imojo.in/Wechsler

[@BakrAli10]

Thank you. But it could be a little more helpful if you mentioned what each test was assessing exactly. Like, what are the types of questions in the Stanford-Binet test in comparison to the original Binet test?

[@PsychExamReview]

Great question, I didn't go into detail on test items but if you want to do some direct comparisons you can find Binet's description of the testing process here (translated by Elizabeth Kite): psychclassics.yorku.ca/Binet/binet1.htm as well as Kite's description of the test here: bir.brandeis.edu/bitstream/handle/10192/28935/413%20p-5.pdf?sequence=1 You can also find the full text of Terman's guide to his revision of the Binet test here: archive.org/details/measurementofint00termuoft Hope these resources help!

[@88deepshikha]

Hello sir This lecture was very helpful. May I request u a lecture about neurological basis of learning.

[@PsychExamReview]

I do have a bit on the neurological basis of learning in this video and the following video on long-term potentiation from the memory unit. These don't go into great amounts of detail so maybe that's something I can cover in the future. Thanks for commenting! kzbin.info/www/bejne/Y3SweYCqqJyefbs

[@88deepshikha]

@@PsychExamReview i will be waiting for the same. Actually found it lil difficult to understand.... Thanks for replying

[@tralala928]

One thing I did not undestand: If Terman longitudinally studied only the 1500 kids who scored the highest, then how could he have made the comparison between them and the rest. Or did you mean that he followed all 168000, but made the comparison at the cutoff point of 135 IQ? Or did he pick a comparable number from amongst the lower-IQ groups and compare to those?

[@PsychExamReview]

Great question! Terman didn't follow all of the "unselected" children and just tracked the high-IQ group in detail. This created data on the high-IQ children as a group over time, which could then be compared to other sources of data. Depending on the trait considered, this other data might be drawn from control groups of children of the same age collected from schools, or from broader population estimates for things like incidence of mental illness, % earning a bachelor's degree, mortality, etc. If you'd like to look through some examples you can find the data from mid-life comparisons in this volume: archive.org/details/giftedgroupatmid011505mbp/page/n5/mode/2up

[@particleonazock2246]

Anyone else who just came here to pique their curiosity?