Effects of the Stimulus Variable on Matrix Classification Responses of 12-Year-Old Children
This study was designed to investigate the relationship between stimulus dimensionality (2-D and 3-D) and matrix classification responses of 12-year-old South African Indian children. Sixty 12-year-old subjects (30 males and 30 females), from a middle-class background were selected. The two sets of stimuli were drawn from the same conceptual domain, namely, geometric shapes and forms. The traditional Piagetian assessment technique of completion was employed. The results revealed that subjects showed a higher rate of success, in terms of both behavioural responses and verbal explanations, with 3-D stimuli than with 2-D stimuli. The results are discussed in relation to (a) the need for standardization of stimuli and assessment techniques to enable a greater degree of generality, and (b) the applicability of the present stimuli across a variety of cultures.