Groups of normal and "at-risk" infants were given an attentional task using sucking suppression as an index of attending. Attending as a measure of perceptual-cognitive development was found to be a sensitive task capable of differentiating high and low risk infants. Further, the performance on this perceptual-cognitive task and the infants' 5 minute Apgar scores were assessed and found to be significantly related. These data together with earlier reports suggest that infants with Apgar scores of 8 or less may be at risk in terms of their cognitivedevelopment. (18pp.)