Cross-cultural study of age-related differences in perceptual acuity.

Examined H. Gough and E. Mcgurk's (see pa, vol. 41:14442) cross-cultural test of cognitive functioning based on a 30-item set of geometric forms and illusions. The applicability of the series and its validity in specifying age-related cognitive levels was studied in 193 9-17 yr. Old italian children and 266 italian adults. Average weighted scores of 14.78 and 17.17 were obtained; response to the testing was favorable in both samples. Among the children, performance on the series correlated .31 with age at last birthday, and mean scores increased consistently from age 9-15. Age norms were similar to those reported earlier for american samples. (29 ref.) (PsycINFO Database Record (c) 2010 APA, all rights reserved)