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Leopold, Daniel R.; Christopher, Micaela E.; Burns, G. Leonard; Becker, Stephen P.; Olson, Richard K.; Willcutt, Erik G. – Journal of Child Psychology and Psychiatry, 2016
Background: Although multiple cross-sectional studies have shown symptoms of sluggish cognitive tempo (SCT) and attention-deficit/hyperactivity disorder (ADHD) to be statistically distinct, studies have yet to examine the temporal stability and measurement invariance of SCT in a longitudinal sample. To date, only six studies have assessed SCT…
Descriptors: Attention Deficit Hyperactivity Disorder, Longitudinal Studies, Cognitive Processes, Children
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Plourde, Vickie; Boivin, Michel; Forget-Dubois, Nadine; Brendgen, Mara; Vitaro, Frank; Marino, Cecilia; Tremblay, Richard T.; Dionne, Ginette – Journal of Child Psychology and Psychiatry, 2015
Background: The phenotypic and genetic associations between decoding skills and ADHD dimensions have been documented but less is known about the association with reading comprehension. The aim of the study is to document the phenotypic and genetic associations between reading comprehension and ADHD dimensions of inattention and…
Descriptors: Genetics, Correlation, Attention Deficit Hyperactivity Disorder, Kindergarten
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Morgan, Paul L.; Hillemeier, Marianne M.; Farkas, George; Maczuga, Steve – Journal of Child Psychology and Psychiatry, 2014
Background: Whether and to what extent racial/ethnic disparities in attention-deficit/hyperactivity disorder (ADHD) diagnosis occur by kindergarten entry is currently unknown. We investigated risk factors associated with an ADHD diagnosis by kindergarten entry generally, and specifically whether racial/ethnic disparities in ADHD diagnosis occur by…
Descriptors: Clinical Diagnosis, Attention Deficit Hyperactivity Disorder, Kindergarten, Racial Differences
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Kegel, Cornelia A. T.; Bus, Adriana G. – Journal of Child Psychology and Psychiatry, 2013
Background: The dopamine D4 receptor gene (DRD4) has been linked to attention deficit hyperactivity disorder (ADHD) and reading disorders. In this study, we examined whether diminished anticipatory dopamine cell firing--typical of the long variant of the DRD4 allele--is related to emergent and advanced alphabetic skills, and whether executive…
Descriptors: Genetics, Executive Function, Attention Deficit Hyperactivity Disorder, Correlation