Eighty middle-class and 80 lower-class boys were tested on a visual and a verbal task under 3 conditions designed to modify an impulsive tempo." (Author)

Examines the effect of different training methods on perceptual learning of impulsive children. A matching to sample method (M), and a differentiation method (D) were used. Data indicated that Ss receiving D training learned to process features distinguishing stimuli; whereas, Ss receiving M training showed no preference for a particular mode of…