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Mapping self‐reported to behavioral impulsiveness: The role of task parameters
Authors:Florian Lange  Frank Eggert
Affiliation:1. Department of Research Methods and Biopsychology, Technische Universit?t Braunschweig, Braunschweig, Germany;2. Department of Neurology, Hannover Medical School, Hannover, Germany
Abstract:Despite being regarded as indicators of a common psychological capacity, behavioral and self‐reported measures of impulsiveness have been found to barely correlate with each other. Acknowledging the construct's multidimensional nature, the present study set out to map dissociable components of behavioral self‐control (delay discounting, response inhibition) onto lower‐order facets of self‐reported impulsiveness. In addition, we examined whether the relationship between response inhibition and self‐reported impulsiveness depends on the balance between facilitative and interfering priming processes involved in a laboratory task. In two consecutive studies, 185 participants completed laboratory self‐control tasks as well as self‐report questionnaires designed to measure facets of impulsiveness. Correlational analyses revealed an association between subscales of the Barratt Impulsiveness Scale (BIS) and response inhibition in a go/no‐go paradigm involving simultaneously presented task‐irrelevant distractors. This association vanished when an onset asynchrony between distractor and target stimuli was introduced. Previous findings regarding correlations between BIS subscales and delay discounting or intra‐individual response variability could not be replicated. Results indicate that the relationship between response inhibition and self‐reported impulsiveness critically varies as a function of subtle task parameters. Focusing on these procedural details and the multidimensionality of self‐reported impulsiveness might allow for a more differentiated analysis of the convergent validity of self‐control measures.
Keywords:Self‐control  impulsiveness  convergent validity  response inhibition  interference  stimulus onset asynchrony
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