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Caron, Rose F.; And Others – Child Development, 1982
To determine whether infants can form face expression categories, groups of infants 18 to 24 weeks old, along with those 30 weeks old, were habituated by the infant control procedure to photographs of four different female faces, each with an identical expression (happiness or surprise). Results are discussed in terms of age and sex differences.…
Descriptors: Abstract Reasoning, Age Differences, Classification, Difficulty Level