Taxonomic category encoding was studied in 160 second and fourth grade students, both low-socioeconomic status Blacks and middle-class Whites. Three items were displayed sequentially, to be recalled later. The results provided conclusive evidence of the availability of taxonomic encoding categories in the groups sampled. (Author/GDC)

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…