Certain visually controlled movements develop only when a kitten (N = 15, 9, and 14) is exposed in light. Visually triggered extension of the forelimbs is not shown when the dark-reared S is 1st tested. Stimulation by light, even if restricted to periods of total immobilization, or with diffusers in front of the eyes, or under stroboscopic illumination, is sufficient for acquisition of the extension response. Visually guided behaviors do not develop under these exposure conditions. Motor-visual feedback, while essential for development of visually guided behaviors, is not required for acquisition of visually triggered extension. (PsycINFO Database Record (c) 2006 APA, all rights reserved)