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MacTurk, Robert H.; And Others – Developmental Psychology, 1987
Sequences of mastery behavior were analyzed in a sample of 67 infants 6 to 12 months old. Authors computed (a) frequencies of six categories of mastery behavior, transitional probabilities, and z scores for each behavior change, and (b) transitions from a mastery behavior to positive affect. Changes in frequencies and similarity in organization…
Descriptors: Affective Behavior, Behavior Development, Goal Orientation, Infants

Rochat, Philippe – Developmental Psychology, 1989
Studied the early development of exploratory behavior in 99 infants of 2-5 months. Results show that there are significant changes in spontaneous multimodal exploration of a novel object between 2 and 5 months. (RJC)
Descriptors: Behavior Development, Child Development, Exploratory Behavior, Infant Behavior