Electronic Theses and Dissertations for Graduate School
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TIMING IN CHILDREN WITH ADHD
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Shapiro, Zvi Raphael
Master of Science
Date of Defense:
December 19, 2016
Cynthia L Huang-Pollock, Thesis Advisor
Bradley Paul Wyble, Committee Member
Frank Gerard Hillary, Committee Member
Several theoretical accounts have suggested that timing deficits may underlie some of the deficits associated with the presence of ADHD. A number of studies have attempted to test the presence of timing deficits, but the results of these are idiosyncratic. Furthermore, previous research largely ignored the potential influence of cognitive mechanisms beyond an “internal clock,” as well as findings of basic timing research. To overcome these limitations, the current study therefore employed the peak procedure and temporal bisection tasks, which are commonly used in timing research. Diffusion modeling of responses was used to evaluate the potential contribution of timing and non-timing mechanisms. Results suggest that the rate of temporal evidence accumulation (the internal clock) is slower among children with ADHD, and this finding is discussed within the context of findings from basic timing research.
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