Background: Previous research has largely focused on evaluating the impact of teaching practical parenting skills to parents with intellectual disabilities. Teaching them about the importance and nature of early attachment behaviors has not yet been explored. This study investigates whether knowledge of early attachment behavior of young adults…

Purpose: This study examined use of a speaker's direction of gaze during word learning by boys with fragile X syndrome (FXS), boys with nonsyndromic autism spectrum disorder (ASD), and typically developing (TD) boys. Method: A fast-mapping task with follow-in and discrepant labeling conditions was administered. We expected that the use of speaker…

Heritability is defined as the proportion of a manifested trait's varience that is due to genetic variation. Sixty-five pairs of twins were employed to investigate the heritability of: (1) short term memory (Jensen's Level 1), operationalized using of modified "digit span" test; (2) the general intellective factor (Jensen's Level II),…