TY - JOUR AU1 - Dehaan, Henry J. AU2 - Wischner, George J. AB - 2 experimental situations, emphasizing differences in stimulus characteristics, yielded no significant differences in learning-set formation by 70 institutionalized retarded children. A Wisconsin apparatus employed laboratory-fabricated objects for ½ the Ss; for the remaining ½, colored slides of these stereometric objects were projected in a specially developed automatic apparatus. The highly comparable performance of the groups is surprising in view of other differences between experimental conditions, particularly those related to degree of spatial contiguity between cue, response, and reinforcement, and availability of tactile and kinesthetic cues. (17 ref.) TI - Three-dimensional objects versus projected color photographs of objects as stimuli in learning-set formation by retarded children JF - Journal of Comparative Psychology DO - 10.1037/h0048283 DA - 1963-04-01 UR - https://www.deepdyve.com/lp/american-psychological-association/three-dimensional-objects-versus-projected-color-photographs-of-pNdB2s0NHu SP - 440 EP - 444 VL - 56 IS - 2 DP - DeepDyve ER -