TIMING IN CHILDREN WITH ADHD

Restricted (Penn State Only)
Author:
Shapiro, Zvi Raphael
Graduate Program:
Psychology
Degree:
Master of Science
Document Type:
Master Thesis
Date of Defense:
December 19, 2016
Committee Members:
  • Cynthia L Huang-Pollock, Thesis Advisor
  • Bradley Paul Wyble, Committee Member
  • Frank Gerard Hillary, Committee Member
Keywords:
  • ADHD
  • Timing
  • Interval Timing
  • Diffusion Modeling
  • DDM
Abstract:
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.