Infant perception of the invariant size of approaching and receding objects
Bibliographic Data
| ID | 9789195 |
|---|---|
| Authors | R H Day (Monash University, corresponding author), B E McKenzie (0009-0008-7499-2045) |
| Year | 1981 |
| Volume | 17 |
| Issue | 5 |
| Pages | 670-677 |
| Publication date | 1981-09-01 |
| Peer Reviewed | Yes |
| Open Access | No |
| Type | ARTICLE |
| Venue | Developmental Psychology (JOURNAL) |
| Journal identifiers | ISSN: 0012-1649 • E-ISSN: 1939-0599 |
| Publisher | American Psychological Association (APA) (PUBLISHER) |
| DOI | 10.1037/0012-1649.17.5.670 |
| OpenAlex | W1975698453 |
| Language | EN |
| Citations received | 7 |
| References cited | 4 |
After habituation of looking at an object that repeatedly approached and receded through 50 cm along the medial axis, infants of about 18 weeks of age were presented with both the same moving object and one of a different size falling within the same range of visual angles as those projected during habituation. The starting point for movement varied widely from trial to trial to desensitize subjects to a range of changing distances and visual angles. Recovery from habituation of looking was greater for the moving object of a different size than for the same object, indicating that the infants perceived an object's invariant size with changing visual angle (i.e., that visual size constancy was operative). A secondary finding was that following habituation to the smaller object there was a markedly greater recovery with the larger object than with the smaller, but following habituation with the larger there was no difference between recovery for the two. These outcomes were attributed to the additive effects of object salience and recovery from habituation. When the distance of an object varies, the representation of its size at the eye is transformed. Nevertheless, under normal viewing conditions its perceived size remains relatively unchanged. A recent series of experiments (McKenzie, Tootell, & Day, 1980) has shown that such perceptual constancy in the face of image transformations at the eye is operative at least from the end of the first half year of infancy. In this study the infants were aged between 18 and 33 weeks. Following habituation of visual fixation under one of four stimulus conditions, recovery from habituation was observed under a standard condition that represented a change in size, a change in distance, a change in size and distance, or no change at all. The pattern of recovery scores across the four groups in each experiment indicated that visual size constancy is clearly present from about 26 weeks. For infants of 18 weeks the results The assistance of G. Coleman and R. McDonell with computing and of H. Tootell with data collection is gratefully acknowledged
Cognitive psychology · Developmental psychology · Invariant (physics · Perception · Subjective constancy · Child and Animal Learning Development · Cognitive and developmental aspects of mathematical skills · Communication · Mathematics · Neuroscience · Psychology · Social Psychology · Spatial Cognition and Navigation · Tactile and Sensory Interactions
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| Unique citing works | 6 |
|---|---|
| Citations per year | 0,21 |
| Citation span | 1992 - 2026 (35) |
| Citation velocity | current |
| Highly cited | No |
| Citation types | Neutral: 7 |