This research provides converging evidence that infants use exploratory activity to differentiate slant around a horizontal axis before they relate information about slant to consequences for locomotion. In Experiment 1, 14-month-old toddlers walked down safe, shallow 10° hills and slid down or avoided risky, steep 36° hills when height of the hills was held constant. Results indicate that judgements were based on slant. In Experiment 2, 9-month-old crawling infants explored shallow 10° and steep 30° slopes differentially in a nonlocomotor task. Exploration was similar to previous locomotor research with full-size hills, even though crawlers plunged head-long over both shallow and steep hills in the earlier study.
- Crawling infants
- Exploration exploratory behavior
- Slant perception
- Slanted surfaces
- Walking infants
ASJC Scopus subject areas
- Developmental and Educational Psychology