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Madison, Guy; Forsman, Lea; Blom, Orjan; Karabanov, Anke; Ullen, Fredrik – Intelligence, 2009
Psychometric intelligence correlates with reaction time in elementary cognitive tasks, as well as with performance in time discrimination and judgment tasks. It has remained unclear, however, to what extent these correlations are due to top-down mechanisms, such as attention, and bottom-up mechanisms, i.e. basic neural properties that influence…
Descriptors: Intelligence, Intervals, Reaction Time, Psychometrics
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Swanson, H. Lee; Zheng, Xinhua; Jerman, Olga – Journal of Learning Disabilities, 2009
The purpose of the present study was to synthesize research that compares children with and without reading disabilities (RD) on measures of short-term memory (STM) and working memory (WM). Across a broad age, reading, and IQ range, 578 effect sizes (ESs) were computed, yielding a mean ES across studies of -0.89 (SD = 1.03). A total of 257 ESs…
Descriptors: Reading Difficulties, Short Term Memory, Ability Grouping, Effect Size