Abstract: | ![]() Proposed a model in which spatial perceptual development was considered as a function of (a) ecology, and (b) mediating variables (cultural, social, nutritional, and genetic) which are functionally adapted to ecology. Ss from 8 subsistence-level samples (e.g., sierra leone and scotland) were given a visual discrimination test and 3 tests of spatial skills: (a) kohs' block-design test, (b) a 6-item form of the embedded figures test, and (d) raven's progressive matrices. Results support the proposed model. Some interactions among the variables, and age and sex differences in the data are discussed. (french summary) (29 ref.) (PsycINFO Database Record (c) 2010 APA, all rights reserved) |