Everyday Life Cognitive Instability Predicts Simple Reaction Time Variability: Analysis of Reaction Time Distributions and Delta Plots.

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    • Subject Terms:
      MOTOR ability testing; REACTION time; ATTENTION; EVERYDAY life; TIME on task (Education)
    • Abstract:
      The goal of this study is to understand the interface between subjectively assessed and objectively measured attention functioning. To this end, we assessed both self-report data using the Cognitive Failures Questionnaire (CFQ) and sustained-attention performance using a low-demand psychomotor vigilance task that required participants to respond to visual targets. Unlike previous studies, reliability of task performance was ensured, testing individuals twice within a retest interval of 1 week. Given that everyday life attentional lapse tendencies vary even in normal-population samples, we asked whether there is a relationship with laboratory performance, in general and as a consequence of time on task (TOT). As a result, low (versus high) CFQ scorers were somewhat different in their average response speed but became particularly prone to lapsing during the task period, as reflected in standard measures of response-speed variability as well as ex-Gaussian parameters of distributional skewness. In conclusion, we argue that persistence to sustained demand might be an important aspect of construct validity that must be evoked by a manipulation of TOT, which may be useful for the evaluation of questionnaires in ecologically valid situations. Copyright © 2015 John Wiley & Sons, Ltd. [ABSTRACT FROM AUTHOR]
    • Abstract:
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