In this post, I will review studies comparing the predictive validity of cognitive ability and parental socioeconomic status (SES) on academic achievement. Parental SES is usually measured via some combination of parental income, educational attainment, and occupational status. Academic achievement is measured either through grades or achievement test scores. A clear picture emerges from each study cited in this post: cognitive ability is a far superior predictor of academic achievement than is parental SES.
Tag: academic achievement
Predictors of academic achievement
The purpose of this post is to cite predictors for academic achievement. I will focus on merely listing effect sizes rather than synthesizing the research.
Racial preferences at elite American universities
In this post, I explore racial preferences in elite universities in the United States. I’ll start by outlining the basic racial demographics of top universities. Then I’ll compare this data to the demography of top achieving American high schoolers. This comparison highlights the consequences of extreme racial preferences in the admissions process of our elite institutions of higher education. Next, I’ll estimate the demography of top universities after separating Jewish whites and non-Jewish whites. My estimates suggest the surprising finding that non-Jewish whites are perhaps the most under-represented racial group at these elite institutions.
Following that, I’ll review studies that attempt to quantify the magnitude and patterns of racial preferences at selective universities. These reviews reveal the surprising finding that elite universities have little to no preferences for low-SES or low-income applicants. Next, I briefly cite a few reviews of affirmative action case law, in order to understand the primary legal defenses of racial preferences that have been presented by selective universities in landmark Supreme Court cases. The review of affirmative action case law leaves me with a few important questions which I believe have not been adequately addressed by elite universities. Finally, I end the post explaining why racial preferences at elite universities are important.
The predictive validity of cognitive ability
There is overwhelming evidence showing the predictive validity of cognitive ability for important life outcomes. Cognitive ability measured as early as age 6 has a strong association with one’s future success in a number of important outcomes, including academic achievement, occupational performance, income, educational attainment, occupational prestige, criminality, self-control, and health. The associations are typically large, often making cognitive ability the best predictor for such outcomes. In this post, I will cite research showing this evidence. I will begin with some background on cognitive ability, including definitions, the distributions of IQ test scores, the stability of cognitive ability test scores, and expert consensus on the validity of cognitive ability. Finally, I will cite data demonstrating the predictive validity of cognitive ability in academic achievement, occupational performance, socioeconomic success, anti-social behavior, and health.