Presents a computer program written in BBC BASIC to create fractal patterns. Discusses program modifications and gives graphic examples of changes. (JM)

Research supported in part by grants from the U.S. Public Health Service and the University of California, Los Angeles. (DD)

The performance of the older subjects (10 years and up) was facilitated by the organizational cues, whereas that of younger subjects was not. (Author)

Results demonstrate that the relationship between the structure of positive and negative instances within a learning series is also critical to concept learning when the concepts are presented in a nondimensioned way. (Authors/CB)

The time-series process postulated is a more general form of the integrated moving average model than for which estimation and testing procedures were formerly available. (Author)

Study concerned with the mechanisms in terms of which the developmental transformation from one cognitive structure to another occurs. (Author)

Considers the controversy between Bruner "et al." (1966) and Piaget (Inhelder & Piaget, 1964) followed up by Sinclair-de-Zwart (1967) concerning the role of language in the cognitive development of children between the ages of 5 and 7. (Author/RK)

Twenty-two children (ages 5-8) with mild mental retardation who received learning set instruction on unidimensional classification and seriation improved on these precursors to concrete operations; 22 children who received more conventional instruction did not. Improvement on classification and seriation was accompanied by improvement on measures…

There is general agreement that the effect of frequency on lexical access time is roughly logarithmic, although little attention has been given to the reason for this. The authors argue that models of lexical access that incorporate a frequency-ordered serial comparison or verification procedure provide an account of this effect and predict that…

Serial order is fundamental to perception, cognition and behavioral action. Three experiments investigated infants' perception, learning and discrimination of serial order. Four- and 8-month-old infants were habituated to three sequentially moving objects making visible and audible impacts and then were tested on separate test trials for their…

Using story retelling as an index of language ability, it is difficult to disambiguate comprehension and memory deficits. Collecting data on the serial position effect (SPE), however, illuminates the memory component. This study examined the SPE of the percentage of information units (%IU) produced in the connected speech samples of adults with…