Investigates third- and fourth-grade children's verbal evaluations of syllables paired with different reward schedules (full, partial, or none) for "pleasantness" and "curiosity." (Author/ED)

In this study, 48 third-grade children learned a successive, two-choice discrimination under one of three conditions: (1) immediate reinforcement (IM), (2) 10-second empty delay (ED), and (3) 10-second delay with the discriminative stimuli in view of S (FD). The performances of groups IM and FD were only marginally different, and were both…

Measures of active sleep, quiet sleep, sucking, crying, body size and gestational age were factor analyzed for 137 normal newborns at 2 days of age. The results yielded 3 stable factors: reactivity-irritability, maturity, and reflexive and discriminative sucking. (JMB)

The effects of meaningfulness of the stimulus materials and the presence or absence of contextual cues on problem-solving behavior were investigated. Third-graders (N=80) were randomly assigned to one of four conditions and their performance in a series of discrimination problems was observed. Subjects in Conditions I and II responded to stimuli…

Six studies relevant to the analysis of generalized imitative behavior are described. The first examined the role of verbal instructions in generalized imitation by comparing the use of a "do this" instruction with no such instruction and the use of positive reinforcement with no reinforcement. The tenacity of generalized imitation in this study…