A study of maximal voluntary isometric muscle contraction force-time curves among 32 normal, healthy 8- to 11-year-olds performing tasks involving separate muscle groups found that force and maximal rate of force increase were quite reproducible, but time to selected force levels reflected considerable variations. (Author/CB)

Examples of claims about racial differences in intelligence that are not supported by scientific evidence are presented, with focus on several studies by A. R. Jensen. Relevant questions that should be addressed by students of racial differences are presented. (SLD)

The use of semiparametric models may require incorporating additional functions which do not vary across distributions and may require expressing the models in terms of the joint distribution of response class and response time. (Author/LMO)

Discusses a paper by Katz, Healy, and Shankweiler that found, contrary to their predictions, that poor readers were significantly impaired on two order recall tasks that were differentiated by the extent to which phonetic memory strategies were employed. Discusses other studies that manipulated the rate of stimulus presentation in order recall…

Assessed the effects of Transcendental Meditation on the perceptual efficiency of the cerebral hemispheres in 20 right-handed men who underwent reaction time trials to an auditory stimulus. Results suggested Transcedental Meditation is an attentional strategy that disrupts the usual biases of the brain. (JAC)

Primary purpose of the present research was to test the reasoning that any procedure that interferes with the naming of the test stimuli, while leaving visual complexity unaffected, ought to increase the detrimental effects on reaction time and accuracy produced by changing case. (Authors/CB)

A number of models are considered that specify how children and adults solve single-digit addition problems. (Authors)

By pushing a child to an early acceptance of our perceptions, we often fail to listen to him and understand what he is saying. (Editor)

This paper suggests that although there is reasonable evidence to support that portion of the Collins-Quillian theory of semantic memory which hypothesizes that words are ordered hierarchically in memory, there is little evidence in support of their hypothesis of cognitive economy of storage in memory. (Author)

Supports the proposition that anxiety over intellectual performance is one antecedent of a reflective cognitive disposition. (Author/WY)

Results of this study of 72 4-month-old infants suggest caution in using an overt demonstration of habituation as a necessary index of perceptual learning. (Author/MG)