School factors are not important: evidence from classroom separation studies

People commonly ascribe large effects to having this or that teacher, or this or that classmate. They usually cite some anecdotes from their personal lives for this, but large sample size, systematic data are strongly negative on the idea. This means that to the extent one can measure things, teachers are largely interchangeable in terms…

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Teaching kids philosophy to boost their abilities in other areas?

Disclaimer: I only took a brief look. Doing the reading and writing this post took maybe 30 minutes. I may have missed something, but unlikely it would have a major effect on the conclusions. I so very much want to believe this! Expert criticism wanted. @KirkegaardEmil @turingcop @ProfSteveFuller @JamesPsychol t.co/S8Km9ivKEp — Chris Cooper (@chris_r_cooper) March…

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Comments on Marty Nemko’s “12 Predictions for 2050”

A reader asked me to comment on the predictions/musings by Marty Nemko at his blog. I had never heard of him before, but he’s some kind of coach, radio host and columnist popular in the Bay Area. The decline in good jobs. My optimistic side predicts that improved education and gene editing to improve intelligence…

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Occupations, cognitive ability and stereotypes

It seems that no one has integrated this literature yet. I will take a quick stab at it here. It could be expanded into a proper paper later in case someone wants to and have time to do that. Stereotypes Lee Jussim (also blog) has done a tremendous job at reviewing the stereotype literature in…

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Betas and residualized variables / does non-g ability predict GPA?

@JamesPsychol Those results don't look real to me. Betas are never exactly identical across models. — Emil O W Kirkegaard (@KirkegaardEmil) September 8, 2015 @JamesPsychol @KirkegaardEmil FSIQ is uncorrelated with the residualized factor index scores, so its beta doesn't change across models. — Timofey Pnin (@pnin1957) September 8, 2015 Let’s test that. Since we don’t…

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