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Wagley, Neelima; Perrachione, Tyler K.; Ostrovskaya, Irina; Ghosh, Satrajit S.; Saxler, Patricia K.; Lymberis, John; Wexler, Kenneth; Gabrieli, John D. E.; Kovelman, Ioulia – Journal of Speech, Language, and Hearing Research, 2019
Purpose: Child language acquisition is marked by an optional infinitive period (ages 2-4 years) during which children use nonfinite (infinitival) verb forms and finite verb forms interchangeably in grammatical contexts that require finite forms. In English, children's errors include omissions of past tense /--ed/ and 3rd-person singular /--s/.…
Descriptors: Language Acquisition, Error Patterns, Adults, Morphology (Languages)
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Bezdjian, Serena; Tuvblad, Catherine; Wang, Pan; Raine, Adrian; Baker, Laura A. – Developmental Psychology, 2014
In the present study, we investigated genetic and environmental effects on motor impulsivity from childhood to late adolescence using a longitudinal sample of twins from ages 9 to 18 years. Motor impulsivity was assessed using errors of commission (no-go errors) in a visual go/no-go task at 4 time points: ages 9-10, 11-13, 14-15, and 16-18 years.…
Descriptors: Genetics, Environmental Influences, Twins, Children
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Miller, Stephanie E.; Marcovitch, Stuart – Journal of Experimental Child Psychology, 2011
Although labeling improves executive function (EF) performance in children older than 3 years, the results from studies with younger children have been equivocal. In the current study, we assessed performance in a computerized multistep multilocation search task with older 2-year-olds. The correct search location was either (a) not marked by a…
Descriptors: Cognitive Development, Children, Task Analysis, Error Patterns