Discrimination and memory for symmetry in young children.

Conducted 3 experiments to assess the development of symmetry perception in children between the ages of 4 and 6 yrs. Exp I employed a learning task in which 72 Ss were asked at different times to discriminate vertically symmetrical, obliquely symmetrical, and horizontally symmetrical holistic patterns from asymmetrical ones. Results reveal a developmental progression: 4-yr-olds discriminated only vertical; 5-yr-olds, vertical and horizontal; and 6-yr-olds, vertical, horizontal, and oblique. Exp II retested the 18 6-yr-olds with fragmented patterns of the different symmetries; these Ss regressed to the performance level of 4-yr-olds and only discriminated vertical. Exp III, conducted with 18 Ss, used a memory-production task with new vertical, oblique, horizontal, and asymmetrical patterns constructed to 4, 5, or 6 elements. Measures of the goodness and accuracy of Ss' reproductions were consistent with data from the discrimination-learning experiments in terms of age, stimulus orientation, and stimulus complexity. These studies support the view that vertical symmetry is special perceptually and developmentally and that, after vertical, horizontal predominates, followed by oblique. The role of symmetry in early perceptual development and the value of child–adult perceptual comparisons are discussed. (55 ref) (PsycINFO Database Record (c) 2010 APA, all rights reserved)