title: Free and matrix classification: an experimental investigation of the responses of nine- and twelve-year-old children.
abstract: This study investigated the relationship between free and matrix classification performance as a function of stimulus dimensionality (2-D vs 3-D) and repealed trials. The subjects were 30 boys and 30 girls, mean age 12 years, and 30 boys and 30 girls, mean age 9 years. The results indicated that subjects succeeded on the matrix tasks more frequently than they were able to give multidimensional free classification responses. Subjects succeeded more frequently with 3-D than with 2-D stimuli. Retrials on both free and matrix classification tasks did not significantly improve performance. Possible reasons for the findings and their future implications were discussed.
authors.affiliation: University of Durban Westville, South Africa.
authors.forename: R D
authors.initials: RD
authors.lastname: Ramkissoon
authors.forename: K
authors.initials: K
authors.lastname: Bhana