Two studies on M-capacity found factor-analytical and correlational evidence that five M-capacity tests share a common source of variance and that, as subjects' increase in age, scores increase at a similar rate. Results suggest that, in the 6-11 age range, M-capacity can be measured with a battery of tests. (AA)

On the basis of a study involving 40 first-grade students, compares Pascual-Leone's and Keating and Bobbitt's developmental theories of information processing by contrasting their predictions about a classification task. Results falsified Keating and Bobbitt's model. Predictions from Pascual-Leone's theory were almost wholly confirmed. (RH)

Four experiments investigated phonemic and visual similarity effects in 5- and 10-year olds. Results suggested that young children rely on modality-dependent codes, which are probably automatically activated, and do not use a speech-based memory code for drawings and words. This pattern of findings appeared to be independent of culture and…