Visual attention and temperament: Developmental data from the first 6 months of life

Infants were assessed longitudinally at 2, 4, and 6 months of age on a visual orienting task. Once engaged on a center stimulus, the latency to initiate a saccade to a peripheral stimulus was measured. The critical manipulation was whether, upon presentation of the peripheral stimulus, the center stimulus remained on (disengage trials) or was turned off (shift trials). Temperament was assessed using the Infant Behavior Questionnaire (IBQ). Latencies to shift attention decreased with age (i.e., 6 < 4 < 2 months.). A disengage-shift difference favoring shift trials was found at 2 months; this difference was only marginally significant at 4 and 6 months. At 6 months, ease of disengagement was associated with infants being more likely to smile and less likely to exhibit frustration. Our findings replicate and extend previous cross-sectional research by showing that the disengage operation undergoes a major developmental change within the first 4 months. Discussion focuses on the relationship between attentional. disengagement and the regulation of emotional states. (c) 2005 Elsevier Inc. All rights reserved.