In an attempt to specify the nature of the variables associated with socioeconomic status, Jensen has proposed a two-level model of mental abilities. The first level represents associative learning. The second level involves higher-order conceptualization, and problem solving. The purpose of the present study was to develop a matrix completion…

Discussed are the theoretical explanations of the observation that low intelligence quotient (IQ), low socioeconomic status children appear to be brighter in certain ways than low IQ middle class youngsters. The two different theories on IQ as a function of socioeconomic status--environmental or cultural vs. genetically determined biological…