| Abstract: | Assessed taxonomic and thematic clustering in free recall in 240 7- and 10-yr-olds from Black and White and low- and middle-SES backgrounds. Materials were pictures that were cross classifiable by taxonomic and thematic categories. A free study condition, in which Ss studied the pictures any way they wished, tested the hypothesis that taxonomic clustering would increase with age and thematic clustering would decrease with age. This condition also tested A. R. Jensen's (see record 1969-09740-001) prediction of population differences in clustering and recall. Two conditions were also included that determined whether constraining Ss to sort taxonomically or thematically during the study period would raise recall and clustering. Results for the free study condition indicate that recall and taxonomic clustering increased with age but thematic clustering was low for both ages. This pattern of performance did not vary with ethnicity or SES. The constrained taxonomic condition raised taxonomic clustering for all children but had no effect on recall for either age group. The constrained thematic condition generally raised thematic clustering for all Ss, but the beneficial effect of the constrained thematic condition on recall was limited to the 10-yr-olds. (26 ref) (PsycINFO Database Record (c) 2010 APA, all rights reserved) |
