A total of 48 8- to 14-week-old infants were presented with a non-contingently moving visual stimulus and the infants' visual attention was measured. Infants who exhibited decrements in attention to the non-contingent stimulus showed recovery in attention when the same stimulus was made to move contingent upon a motor response. Moreover, wisual attention was maintained as long as the stimulus moved contingently. The results are discussed in terms of different attentional values for non-contingent and contingent events as well as in terms of young infants' sensitivity to temporal periodicity of stimuli. (Author/SET)