抄録
This paper presents recent visual developmental studies relating to infants. The American developmental researcher Robert L. Fantz developed a new procedure to in- vestigate infants’ cognitive abilities. The preferential looking paradigm shows that infants look longer at some pattern images, and habituation situations to study infants’ cognitive abilities are well-known procedures. Cognitive psychology has revealed infants’ visual abilities by depending on these procedures. During 1980–1990, infants’ basic vision, such as acuity, colour vision, and motion threshold, was uncovered. Recently, the higher vision phenomenon has been clarified, and we call it ‘pre-constancy vision’ in infants.
