We are pleased with the commentators' thoughtful reactions to our study, as they make it clear that the study met its major goal--identifying age differences that suggest developmental changes in the learning process and the strengthening of executive processes in the second decade of life.

An investigation is presented of the degree to which learning sets were developed during formation of twenty successive concepts. (Author)

Investigated the thought patterns of children classified as "nonanimistic." It was found that the subjects did not fully grasp the implications of the life concept as certain life-related concepts were more accurately generalized than others. (DP)

Research supported by Grant HD-01570 and by USPHS Post-doctoral Fellowship Grant 1-F2-MH-29, 557-01, and reported at the annual meeting of the Eastern Psychological Association (Boston, April 1967).

THIS PAPER PRESENTS A SUMMARY OF BERLYNE'S THOUGHT ABOUT CURIOSITY AND COGNITIVE CONFLICT AS MOTIVATIONAL FACTORS IN KNOWLEDGE-SEEKING BEHAVIOR. THE SUMMARY IS BASED UPON FOUR OF BERLYNE'S WORKS THAT WERE SELECTED AS "CORE" TO THE DEVELOPMENT OF HIS THOUGHT. THIS PAPER CONCENTRATES UPON BRINGING OUT THE SIGNIFICANT DIFFERENCES OF THE SELECTED…

Discussed are the relationship between learning and divergent production and implications for the development of academic abilities. (Author/JYC)

The algo-heuristic theory is concerned with identifying unobservable cognitive processes and their unconscious component cognitive operations, including learning how to describe them algorithmically and heuristically, and how to devise specific instructional tools (algorithmic and heuristic) to develop cognitive processes much faster. (BW)

Decisions about whether pairs of letter strings are both words or not are faster for semantically related words than unrelated words. Two experiments showed the semantic relatedness effect is greatly reduced when orthographically illegal, unpronounceable strings were used as negative items. Lexical decisions involve options on codes representing…

Investigated the role of physiological self-regulation (cardiac vagal tone) in information processing (habituation) in infants. Found that decreases in vagal tone consistently related to habituation efficiency at 2 and 5 months. Within- and between- age suppression of vagal tone predicted accumulated looking time (ALT), but ALT did not predict…

Reviews evidence of the way the maturation of the brain may structure the plasticity that is available for the construction of the mind. Presents evidence taken from non-invasive imaging techniques that makes use of electrode potentials, magnetic resonance, or positron emission. Discusses the development of the brain in terms of grey and white…

"It is imagination, above all, that drives learning forward." With the eloquence and insight always associated with his work, Michael Armstrong considers how to recognise children's imaginative achievement: how to observe it, interpret it, value it and promote it. The child's exemplification of the power of the imagination demands our respect, but…

We proposed that mitral cell [beta]1-adrenoceptor activation mediates rat pup odor preference learning. Here we evaluate [beta]1-, [beta]2-, [alpha]1-, and [alpha]2-adrenoceptor agonists in such learning. The [beta]1-adrenoceptor agonist, dobutamine, and the [alpha]1-adrenoceptor agonist, phenylephrine, induced learning, and both exhibited an…

Resurgence refers to the recovery of previously extinguished responding when a recently reinforced response is extinguished. Although the topic of resurgence has received limited experimental attention, there recently have been an increased number of investigations involving the topic. This increased experimental attention also has been…

Cognitive mechanisms underlying repetition priming in picture naming were decomposed in several experiments. Sets of encoding manipulations meant to selectively prime or reduce priming in object identification or word production components of picture naming were combined factorially to dissociate processes underlying priming in picture naming.…