Experiment 1 compared 6- and 8-year-old boys in inter- and intramodal matching of fast or slow spatiotemporal patterns with long or short interpattern intervals. Experiment 2 made the same comparisons for 7- and 9-year-old boys using temporal patterns. (Author/JMB)

Using arrays of dots and grids many numerical concepts can be illustrated for students. (SD)

Examined the hypothesis that good and poor readers would differ in their ability to order stimuli that can be easily recoded as words and stored in phonetic form, but not in their ability to order nonlinguistic stimuli that do not lend themselves to phonetic recoding in short-term memory. (Author/DB)

A total of 72 children, 36 each from first and sixth grades, were given a 70-item study list followed by a recognition test list of equal length. To indicate the relative dominance of features encoded at both ages, labels, pictures, and referents were recombined to form visual, semantic and acoustic distractors. (MS)

Two experiments investigated perceptual primacy of dimensional and similarity relations in stimulus classifications of younger and older subjects. Results support a differential-sensitivity view of perceptual development which asserts that individuals at all ages primarily perceive and use separate relations. (RWB)