Measurement of mental rotation presents a serious challenge to cognitive researchers owing to the lack of a single comprehensive measure that can be applied across the developing age groups. Objective of the present study was to develop and validate a new measure of mental rotation for preadolescent and adolescent age groups. Items were…

This study examined whether there is a developmental difference in the emergence of an item-position effect in intelligence testing. The item-position effect describes the dependency of the item's characteristics on the positions of the items and is explained by learning. Data on fluid intelligence measured by Raven's Standard Progressive Matrices…

Writing argumentative texts is a hallmark of literacy attainments with a long and laborious trajectory. The present study explored the incipient stages in argumentative texts written by 293 Hebrew-speaking Israeli children in second, third, fourth, and fifth grades. The literacy cognitive, transcriptional, linguistic, and reading abilities were…