Longitudinal study of two cohorts of children selected in the second or third year of life as being extremely cautious and shy (inhibited) or fearless and outgoing (uninhibited) in regards to unfamiliar events revealed preservation of these two behavioral qualities through their sixth year. (PCB)

Reply by Jerome Kagan to a recent article by Block, Gjerde, and Block (1986) which questions the validity of the construct of reflection-impulsivity. Kagan alleges flaws in the logic of the authors' (Block, Gjerde, Block) position and in the inferences drawn from their data. (Author/RWB)

Behavioral and physiological assessments of 41 seven-and-one-half-year-old children who had been selected to be inhibited or uninhibited at 21 months and observed again at four and five-and-one-half years revealed that each of the two original behavioral profiles predicted theoretically reasonable derivatives. Shy children remained shy, while…

Reports on two longitudinal studies of two-year-old children who were extreme in the display of either behavioral restraint or spontaneity in unfamiliar contexts. Indicates that by age seven most of the restrained group were socially avoidant while the spontaneous children were talkative and interactive. (TW)