Background: We examined longitudinal academic achievement and neuropsychological functioning across two time points in young students with Down syndrome (DS) and a typically developing (TD) comparison group equated on nonverbal mental age (NVMA). Method: Participants engaged in assessments of academic achievement, executive function (EF), and…

The present study explored whether different executive control and speed measures (working memory, inhibition, processing speed, and naming speed) independently predict individual differences in word reading and reading comprehension. Although previous studies suggest these cognitive constructs are important for reading, the authors analyze the…

The rate at which people process information appears to influence many aspects of cognition across the lifespan. However, many commonly accepted measures of "processing speed" may require goal maintenance, manipulation of information in working memory, and decision-making, blurring the distinction between processing speed and executive…