Jordan Lasker

Jordan Lasker

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11
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Introduction
Skills and Expertise

Publications

Publications (11)
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Recent research has provided strong demonstrations to the effects that education improves scores on intelligence tests. We tested whether the improvements elicited by education were consistent with raised intelligence or enhancements to specific skills involved in intelligence testing. We used the structural equation models from Ritchie, Bates & De...
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We reply to Giangrande and Turkheimer's (2021; hereafter, “G&T”) recent critique of our meta-analysis on racial/ethnic differences in the heritability of intelligence (Pesta et al., 2020). G&T misrepresented our paper and much of the relevant scientific literature, providing inaccurate comments about nearly every conceptual and methodological charg...
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Recent research has advanced a socioecological theory to account for differences in the strengths of covariances among disparate personality measurements in different cultures. According to this socioecological complexity hypothesis, niche diversity is greater in more complex societies and this relaxes the covariances among personality traits (e.g....
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There are few empirically derived theories explaining group differences in cognitive ability. Spearman's hypothesis is one such theory which holds that group differences are a function of a given test's relationship to general intelligence, g. Research into this hypothesis has generally been limited to the application of a single method lacking sen...
Preprint
Lukaszewski et al. (2017) advanced a socioecological theory to account for differences in the strengths of covariances among disparate personality measurements in different cultures. They tested their theory using personality data gathered from 55 countries, and argued the results of their analysis implicated socioecological complexity as a modifie...
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We sought to assess whether previous findings regarding the relationship between cognitive ability and religiosity could be replicated in a large dataset of online daters (maximum n = 67k). We found that self-declared religious people had lower IQs than nonreligious people (atheists and agnostics). Furthermore, within most religious groups, a negat...
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Via meta-analysis, we examined whether the heritability of intelligence varies across racial or ethnic groups. Specifically, we tested a hypothesis predicting an interaction whereby those racial and ethnic groups living in relatively disadvantaged environments display lower heritability and higher environmentality. The reasoning behind this predict...
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Using data from the Philadelphia Neurodevelopmental Cohort, we examined whether European ancestry predicted cognitive ability over and above both parental socioeconomic status (SES) and measures of eye, hair, and skin color. First, using multi-group confirmatory factor analysis, we verified that strict factorial invariance held between self-identif...
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Little research has dealt with intragroup ancestry-related differences in intelligence in Black and White Americans. To help fill this gap, we examined the association between intelligence and both color and parent-reported ancestry using the NLSY97. We used a nationally-representative sample, a multidimensional measure of cognitive ability, and a...
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The IQ averages of biracial children have long been of interest to intelligence researchers for clarifying the causes of group differences in intelligence. We carried out a search for IQ test results of biracial children fathered by U.S. servicemen after World War 2 and indigenous Asian women in northeast Asian countries (Japan, Korea, China). We w...

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