Infant visual attention in the paired-comparison paradigm: test-retest and attention-performance relations.
The visual behavior of infants in the paired-comparison paradigm was assessed with multiple discrimination tasks week-to-week at 4 and 7 months and longitudinally from 4 to 7 months. Results indicated that although task-to-task reliability was extremely variable and typically low, most measures of infants' attention averaged across multiple tasks were reliable from 1 week to the next as well as relatively stable over the longer longitudinal period. Across all groups, infants who had shorter fixations (i.e., more fixations per fixed-exposure period) during the familiarization phase showed higher novelty preferences. While infants' shift rate during test phases was a reliable individual characteristic at 7 months, it was not at 4 months; rather, data suggested that the difficulty of the stimulus discrimination may be related to young infants' shift rate.
Colombo, John, D. Wayne Mitchell, and Frances Degen Horowitz. "Infant visual attention in the paired-comparison paradigm: Test-retest and attention-performance relations." Child development (1988): 1198-1210.