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Stopping performance

RH Rebecca Healey
MG Megan Goldsworthy
SS Sauro Salomoni
SW Simon Weber
SK Sarah Kemp
MH Mark R. Hinder
RG Rebecca J. St George
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The effects of Age (young/older), Congruency (SST/neutral/congruent/incongruent) and their interaction effects on the motor inhibition ability measures (SSRT and Cancel Time) were investigated with two mixed models, with a subject-level random effect. Bonferroni-adjusted contrast tests were used to compare changes in stopping performance across all levels of congruency, within young and older adults for significant interactions. For SSRT, a linear mixed model was used, but due to positively skewed, trial-level data for Cancel Time, a generalised model (with a gamma distribution and identity link function) was used. To examine differences in the proportion of trials with and without prEMG, a binomial GLMM was run with a probit link function; with fixed factors of Age and Congruency, and random intercepts for subjects.

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