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Campos, Joseph J.; Ramsay, Douglas S. – Developmental Psychology, 1978
Attempts to determine whether infants' performance in two search tasks is related to their entry into Stage 6 of object permanence development (thereby testing Piaget's claim that only Stage 6 infants possess the capacity for representation). (BD)
Descriptors: Cognitive Development, Cognitive Processes, Developmental Stages, Infant Behavior
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Shutts, Kristin; Keen, Rachel; Spelke, Elizabeth S. – Developmental Science, 2006
Previous research has shown that young children have difficulty searching for a hidden object whose location depends on the position of a partly visible physical barrier. Across four experiments, we tested whether children's search errors are affected by two variables that influence adults' object-directed attention: object boundaries and…
Descriptors: Structural Elements (Construction), Proximity, Object Permanence, Toddlers