ERIC Number: EJ823508
Record Type: Journal
Publication Date: 2008-Nov
Abstractor: As Provided
Reference Count: 0
Locomotor Experience and Use of Social Information Are Posture Specific
Adolph, Karen E.; Tamis-LeMonda, Catherine S.; Ishak, Shaziela; Karasik, Lana B.; Lobo, Sharon A.
Developmental Psychology, v44 n6 p1705-1714 Nov 2008
The authors examined the effects of locomotor experience on infants' perceptual judgments in a potentially risky situation--descending steep and shallow slopes--while manipulating social incentives to determine where perceptual judgments are most malleable. Twelve-month-old experienced crawlers and novice walkers were tested on an adjustable sloping walkway as their mothers encouraged and discouraged descent. A psychophysical procedure was used to estimate infants' ability to crawl/walk down slopes, followed by test trials in which mothers encouraged and discouraged infants to crawl/walk down. Both locomotor experience and social incentives affected perceptual judgments. In the encourage condition, crawlers only attempted safe slopes within their abilities, but walkers repeatedly attempted impossibly risky slopes, replicating previous work. The discourage condition showed where judgments are most malleable. When mothers provided negative social incentives, crawlers occasionally avoided safe slopes, and walkers occasionally avoided the most extreme 50-degree increment, although they attempted to walk on more than half the trials. Findings indicate that both locomotor experience and social incentives play key roles in adaptive responding, but the benefits are specific to the posture that infants use for balance and locomotion.
Descriptors: Infants, Mothers, Risk, Cognitive Processes, Incentives, Psychomotor Skills, Evaluation Methods, Parent Child Relationship, Perception
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Publication Type: Journal Articles; Reports - Research
Education Level: N/A
Authoring Institution: N/A