We constructed and calibrated an instrument targeting conceptual and procedural fraction knowledge. We used this instrument in a quantitative study with 126 secondary students (7th and 9th graders), testing the hypothesis that there are individual differences in the way students combine the two types of knowledge. Cluster analysis revealed four…

Contribution: Prior studies on tangible versus graphical user interfaces have reported controversial findings concerning children's preferences. This paper shows that their preference profiles in the domain of introductory programming are associated with gender and age for both interfaces. Background: The relevant literature mainly consists of…

This study compared the consistency of the Short Form (SF) and the Long Form (LF) of the Bruininks-Oseretsky Test of Motor Proficiency (BOTMP) in identifying preschool children with motor impairment (MI). One hundred and forty-four Greek preschool children participated (74 males, 70 females; mean age 5y 2mo [SD 5mo], range 4y 6mo-5y 6mo). Although…

Presents a theory of cognitive development that postulates a general cognitive processing system, a hypercognitive system governing self-regulation, and specialized structural systems responsible for processing different reality domains. Suggests five principles that serve as organizational pivots of developing cognition. Reports the results of…

Reports on a study of the effects of culture, gender, and age on interpersonal distance, body orientation, and touch among 381 same-sex and mixed-sex dyads in 7 nations. Finds that more touch was observed among Italian and Greek dyads than among English, French, and Dutch dyads. (CFR)

Background: There is considerable interest in differences in students' approaches to learning, particularly in the difference between "deep" approaches (characterized by contextualization, critical review and recognition of the value of the content) and "surface" approaches (characterized by rote learning for functional…