Kevin Jackson Fails History

On Fox News yesterday, host Laura Ingraham brought on two Black guests to respond to Spike Lee’s strong statements attacking Trump as Racist. Media Matters has the video, and a transcript of a small slice of what was said. What they found remarkable was Kevin Jackson’s statement to Leo Terrell, Ingraham’s other guest, that

the Three-Fifths Compromise was essentially what this particular gentleman doesn’t understand was it was to give humanhood to black people. Spike Lee learned that and it was an embarassment to him.

It’s no surprise to any readers here that he’s wrong. But here’s the thing. Quite a number of people don’t understand the 3/5th compromise. Quite a number of you reading this, I’m sure, don’t understand the Three-Fifths Compromise, if by “number” we include “one or possibly two out of both my readers”. One and two are both numbers, right? Okay then. That out of the way, let’s take a look at why Jackson is wrong.

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Peterson IS Freud

PZ has another post up on the failures of Jordan Peterson. It points out the irony of skeptics embracing Peterson when Peterson himself does skepticism so damn badly. As a major exemplar, PZ calls out Peterson’s embrace of Freudianism. Among other observations, he expresses surprise that Peterson, a psychologist, would embrace Freud long after he’s been discredited. Others in the comments provide other observations on just how rare it is to teach much Freud in university psychology programs.

I don’t doubt the truth of those observations, but Freud is nonetheless highly relevant today, and his relevance to today very likely explains exactly why Peterson embraces the man’s ideas.

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My Optimal Test Taking Approach

All this talk about Murray and IQ has reminded me of a great time I had one day in fourth grade taking a standardized test. Now, don’t get me wrong, there are institutional uses to which those test scores are put. I think there are good critiques we could make about the uses of those scores, but the critiques are already out there in the field where people actually study this stuff. If policy makers haven’t yet listened to those critiques to come up with better policies that does suck, but we have to take responsibility for our actions in the world we live in now, not the world we might like to occupy.

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Did Chinese Children Evolve To Take Tests After Breakfast?

My recent posts have focussed on IQ and the differences between a gap in IQ test results and a gap in general intelligence or g. The contemporary difference between white and Black racial mean IQ is about 10 points. For every IQ test subject, including all white subjects and all Black subjects, some portion of that IQ score represents a measurement of g. However, there are good reasons to think that the proportion of the IQ score that measures g will be different among white people from the proportion measuring g among Black people. While I don’t think that motivation is different enough between racial groups to explain the mean IQ score gap, it’s very interesting and relevant to note that placebo effects that are likely due entirely or almost entirely to motivation effects (primarily a combination of arousal effects and attention effects) can on their own generate a 10 point difference in mean IQ test scores. The Proceedings of the National Academy of Sciences (in this case, the “nation” is the USA) has the lowdown.

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Racial differences in average g are not known to be genetic. Or even known to be. Seriously.

On my recent post on the genetics of g – really the genetics of group differences (and especially racial group differences) in mean g – colnago80 raised in a comment some work on Panda’s Thumb summarizing certain research about intelligence, intelligence testing, g, and genetics. You should certainly read it if you have a mind to do so, and you can find it here. It was written recently, published yesterday, and intended to be a contribution to the current debates closely related to the discussion Murray and Sam Harris had on Harris’ podcast: do liberals irrationally reject a genetic contribution to g? For Panda’s Thumb, the current version of this discussion began with a post there 3 weeks ago that was based on research by PhD candidate Emily Willoughby.

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Destabilizing The Genetics Of g

There is yet another discussion of intelligence raging across the internet just now, sparked by Sam Harris’ interview of Charles Murray and a Vox article critical of that interview. (h/t to PZ) I have been critical of the uses of IQ testing for quite some time now, dating back to 8th grade or so. There is nothing per se wrong with intelligence testing. Nor is it inherently bad to make use of intelligence testing. As part of a job application where one is being asked to perform particular tasks in a particular environment, it’s entirely conceivable that a particular intelligence test or set of such tests might well predict success in that job. However, for many if not the vast majority of public policy purposes, IQ and other intelligence testing will function badly, misleadingly, or both. This is even more true if we make assumptions about how much of a particular test result is due to intraracial genetic factors (factors shared within one race, but not between people of different races).

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Dogmatism: Empathy and Analytical Thought in Tension

Researchers from Case Western have recently expanded on research that might be interesting to FtB audiences. The university’s write up identifies previous research as finding that brain “circuits” for empathy and for analytical thinking are separate but use overlapping resources and are (perhaps because of this) used alternately more than they are simultaneously:

The researchers say the results of the surveys lend further support to their earlier work showing people have two brain networks—one for empathy and one for analytic thinking – that are in tension with each other. In healthy people, their thought process cycles between the two, choosing the appropriate network for different issues they consider.

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