The present study examined the ability of younger and older preschool children from different backgrounds (16 middle-class black, 16 middle-class white, 16 working-class black, and 16 working-class white) to map labels to objects and to establish inclusion relationships. The children were taught novel labels for perceptually related and unrelated unfamiliar objects. Although the groups were similar in their ability to comprehend the first label during the first session, white children produced the first label more. When additional labels were taught during subsequent sessions, the differences among the groups of children were augmented. Although children from all backgrounds applied labels to objects based on initial labelings, middle-class, white, and older children did this to a greater extent than working-class, black, and younger children. Evidence for the use of inclusion relations for perceptually related target objects was not found for the children; rather, the children used a mutually exclusive labeling strategy.

The issue of how tones are represented and processed when speaking Mandarin Chinese was examined via naturalistic slips of the tongue. The slips were collected from tape-recorded radio call-in programs over a period of one year. One research assistant listened to the programs twice, and another listened to them a third time independently. All the errors judged to be slips by the assistants were reviewed by the author. A total of 987 slips were confirmed and classified according to the system of Garnham, Shillcock, Brown, Mill, and Cutler (1982). With respect to the sound movement errors, it was found that, although errors of segmental phonemes were fairly common, errors of tones were rare. Moreover, the error pattern of the tones was different from that of the segmental phonemes. The relative immunity of tone to production errors is similar to the problem of stress in English. It is suggested that lexical tones in Mandarin Chinese are represented and processed differently than segmental sounds but similarly to lexical stress in English. These characteristics of the Mandarin tones relative to the segmental sounds are described in a model of phonological encoding for a single word, adapted from Levelt (1989).

The aim of the present research was to determine the role of reading-related experience and processing speed on the time it took for children to name familiar stimuli. A total of 168 children, aged 7 to 13, were administered measures of global processing speed, title and author recognition, naming time, and reading ability. Naming times were predicted by age-related change in processing time but not by reading experience (as assessed by author and title recognition). The results are discussed in terms of the factors responsible for the relation between naming speed and reading.