We investigated time-related patterns in levels of cognitive performance during the period from 1970 to 1993 based on data from Swedish draft boards. The conscripts, including more than a million 18-19-year old men, had taken one of two versions of the Swedish enlistment battery (SEB67; 1970-1979 or SEB80; 1980-1993), each composed of four…

Deferred imitation and early social communication skills were compared among speaking and nonspeaking children with autism and children developing typically. Overall, the children with autism showed a lower frequency on measures of deferred imitation and social communication compared with typically developing children. Deferred imitation was…

The Matthew effect is often used as a metaphor to describe a widening gap between good and poor readers over time. In this study we examined the development of individual differences in reading and cognitive functioning in children with reading difficulties and normal readers from Grades 1 to 3. Matthew effects were observed for individual…

Scanator is an extremely valuable tool in the functional analysis of qualitative stability in text building behavior during writing. Scanator also allows for a detailed investigation of subtle changes emerging in the structural relations of emergent novelties. This study focused on the extension of the application of Scanator to one pair of…

Changes in verbal, spatial, and reasoning intelligence among Swedish 13-year olds were studied from 1960 to 1990. Rising verbal scores until 1980 have been followed by a decline to essentially the 1960 level. Spatial and reasoning results have risen continuously. Gender and social class differences are discussed. (SLD)

This longitudinal study examined the experiences of out-of-home preschool child care to performance and adjustment in elementary school. Subjects were 145 children in Goteborg, Sweden, who were on average 16 months of age when they were enrolled in this study. Within 4 weeks of enrollment in the study, 54 children began center-based day care, 36…