Dimensional Dominance and Extradimensional Shifts

Abstract

60 9-yr.-old school children made similarities judgments about stimuli on the basis of form, color and size using a triads method. They then learned a size discrimination which was followed by extradimensional shifts to either form or color. Shifts to the dominant dimension of form were performed faster than shifts to the non-dominant dimension of color. All Ss were form dominant on both pre- and post-training assessment.