Empirical evidence collected so far has revealed that the bilingual advantage cannot be reduced to a single component of the executive functioning, and point to the need to understand the effects of bilingual experience on cognition as influencing a wider family of mental processes, including, but not limited to, cognitive control. The present…

Background: A population sample of people with Down syndrome has been studied from infancy and has now been followed up again at age 47 years. Methods: Intelligence and language skills were tested and daily living skills assessed. Memory/cognitive deterioration was examined using two test instruments. Results: Scores on verbal tests of…

The ability to learn a route through a virtual environment was assessed in 19 older children and adults with Williams syndrome (WS) and 40 typically developing (TD) children aged 6-9 years. In addition to comparing route-learning ability across groups, we were interested in whether participants show an adult-like differentiation between "useful"…

This study examined the relationship between characteristics of the Broader Autism Phenotype (BAP) and nonverbal sensitivity, the ability to interpret nonverbal aspects of communication, in a non-clinical sample of college students. One hundred and two participants completed a self-report measure of the BAP, the Autism Spectrum Quotient (AQ), and…

Administered the Peabody Picture Vocabulary Test-Revised, Peabody Picture Vocabulary Test, and Wechsler Adult Intelligence Scale-Revised to mildly retarded adults (N=21). Results indicated that the revised Peabody tended to yield significantly lower estimates of functioning than did the other measures. (Author/LLL)

A raised-line form of the TONI (test of nonverbal intelligence), a graphic performance test, may effectively measure performance IQ of blind adults. Pilot studies show that while the tactile TONI may be too difficult for low-IQ adults, it may identify some kinds of learning disabilities and brain damage in adults with blindness. (Author/PB)

Replicating previous findings that the inability to "shift" conceptual attitude on the Weigl is consistent with indices associated with cortical dysfunction, the Weigl is shown to possibly serve as a nonverbal instrument to assess cortical dysfunction where inability to "shift" appears to tap a dysfunction in symbolic rather…

This report reviews a theoretically inspired empirical investigation of individual differences in knowledge, abilities, and nonability traits as part of an ongoing effort to better understand adult intellectual development and to develop more accurate measures of adult intelligence. Twenty Knowledge Scales were constructed, drawing on…