| Abstract: | Administered a tachistoscopic recognition task to 36 retarded and 36 normal 6-7 yr old readers to determine whether retarded Ss' visual-perceptual deficit was a function of speed of exposure and/or difficulty of discriminating alternatives on response cards. 3 time exposures were employed, and there were 2 sets of response cards. All cells in the factorial design were independent, and the same stimuli were presented tachistoscopically to all Ss. It was found that speed of exposure, not difficulty of response cards, differentiated between retarded and normal Ss. At the faster exposures of 10 msec and 1 sec, retarded Ss performed significantly less well than normals, but they equaled the performance of normals at the slower exposure of 5 sec. (PsycINFO Database Record (c) 2010 APA, all rights reserved) |
