Performance on a range of spatial and mathematics tasks was measured in a sample of 1592 students in kindergarten, third grade, and sixth grade. In a previously published analysis of these data, performance was analyzed by grade only. In the present analyses, we examined whether the relations between spatial skill and mathematics skill differed…

The relations among various spatial and mathematics skills were assessed in a cross-sectional study of 854 children from kindergarten, third, and sixth grades (i.e., 5 to 13 years of age). Children completed a battery of spatial mathematics tests and their scores were submitted to exploratory factor analyses both within and across domains. In the…

In the present study it has been examined how children's creative writing tasks may contribute to teachers' understanding of children's values. Writings of 300 elementary school children about what they would do if they were the boss of The Netherlands were obtained and seemed to reflect different types of values. Most children were concerned with…

Results of two experiments support the finding of developmental change in the role of representation in perspective-taking tasks. Experiment 1, which involved 80 first-grade students with a mean age of 6.5 years, crossed task characteristics and response modes. Subjects either imagined an observer's movement around a fixed array or imagined an…

To examine the relationship between children's social-cognitive status and the production of persuasive arguments and to determine the effects of age and the channel of communication on these arguments, 16 first grade, 17 third grade, and 16 fifth grade students were asked to produce both oral and written persuasive messages and were administered…