Youth's friendships serve important functions in development; however, internalizing symptoms may undermine these relationships. Two studies are presented that examine the association of depressive and anxiety symptoms with friendship adjustment. Study 1 tested concurrent effects and Study 2 tested prospective effects over 6 months. Like past…

Several models assume that working memory development depends on age-related increases in efficiency and speed of processing. However, age-related increases in the efficiency of the mechanisms that counteract forgetting and restore memory traces may also be important. This hypothesis was tested in three experiments by manipulating both the…

Research on the development of reading skills through the primary school years has pointed to the importance of individual differences in initial ability as well as the growth of those skills. Additionally, it has been theorized that reading skills develop incrementally. The present study examined the genetic and environmental influences on 2…

This study validated the four mathematics tests of the Spanish version of the Woodcock-Johnson III (WJ-III) Achievement (ACH) battery for use in the first six grades of school in Spain. Developmental effects and gender differences were also examined. Participants were a normal population sample of 424 (216 boys) children aged 6 to 13 years.…

Previous research has indicated that boys and girls differ in the ways they display aggression and experience victimization. This study examined the ability of American children to correctly differentiate between various forms of aggressive acts and pro-social behavior. The results indicate that though there appear to be developmental differences…

The guidelines published by the National Association for the Education of Young Children on the use of developmentally appropriate practices (DAP) have, over the last two decades, had an important influence on young children's educational experiences. The efficacy of these guidelines for changing children's outcomes has been examined by only a…

The purposes of this study were to (a) examine the developmental patterns in pseudoword reading and oral reading fluency in Spanish and English for Spanish-speaking English learners (ELs) in grades 1-3, and (b) investigate whether initial status and growth rates in reading fluency in Spanish and English, significantly predicted reading…

This article reports on the use of portfolios to develop ELT major student-teachers' autonomy. The research was carried out for 14 weeks with twenty-one 3rd grade student-teachers in the English Language Teaching Department of Cukurova University, Adana, Turkey. To evaluate the impact of portfolios on fostering the participants' autonomy, data…

This study investigated the structure and development of processes involved in "g." One hundred and forty children, about equally drawn among primary school grades 1-6 were examined by four types of Stroop-like speeded tasks addressed to processes of increasing complexity (i.e., speed of processing, perceptual discrimination, perceptual control,…

Researchers and policymakers are increasingly interested in the impact of afterschool programs on youth development. Even though numerous studies have investigated the impact of afterschool participation on academic outcomes, there is limited research on the differential impact of afterschool programs based on students' participation rate. This…

Similarities between adolescents are often the cornerstone of a friendship; yet researchers know little about the similarities in friends' perceptions of the relationship. In the current study, the authors examine similarities in friends' perceived friendship qualities during the transition into early adolescence (n = 77 third graders, 110 fourth…

The authors examined developmental and individual differences in pure numerical estimation, the type of estimation that depends solely on knowledge of numbers. Children between kindergarten and 4th grade were asked to solve 4 types of numerical estimation problems: computational, numerosity, measurement, and number line. In Experiment 1,…

This study presents a longitudinal examination of the development of reading and reading-related skills of 22 Grade 4 children identified as having reading disabilities (RD) who had been followed since kindergarten. The analyses were conducted to investigate the patterns of emergence of RD as well as reading ability and risk status across the 5…

Three studies investigated developmental changes in immanent justice responding by asking participants to respond to vignettes in which a person's bad behaviour was followed by a negative consequence. Study 1 consisted of 152 sixth graders and 128 college students and presented participants with a vignette that examined the notion of bad people…

The purpose of this study was to investigate predictors of early writing for low-income, urban students. Drawing on research and theory characterizing literacy development as a complex, integrative process, the author analyzed growth in the descriptive writing of students in Grades 1-3. The participants were 309 low-income children enrolled in 16…