title: The role of motivation, glucose and self-control in the antisaccade task.
abstract: Research shows that self-control is resource limited and there is a gradual weakening in consecutive self-control task performance akin to muscle fatigue. A body of evidence suggests that the resource is glucose and consuming glucose reduces this effect. This study examined the effect of glucose on performance in the antisaccade task - which requires self-control through generating a voluntary eye movement away from a target - following self-control exertion in the Stroop task. The effects of motivation and individual differences in self-control were also explored. In a double-blind design, 67 young healthy adults received a 25g glucose or inert placebo drink. Glucose did not enhance antisaccade performance following self-control exertion in the Stroop task. Motivation however, predicted performance on the antisaccade task; more specifically high motivation ameliorated performance decrements observed after initial self-control exertion. In addition, individuals with high levels of self-control performed better on certain aspects of the antisaccade task after administration of a glucose drink. The results of this study suggest that the antisaccade task might be a powerful paradigm, which could be used as a more objective measure of self-control. Moreover, the results indicate that level of motivation and individual differences in self-control should be taken into account when investigating deficiencies in self-control following prior exertion.
authors.affiliation: Department of Psychology, Fylde College, Lancaster University, Lancaster, LA1 4YF, United Kingdom.
authors.forename: Claire L
authors.initials: CL
authors.lastname: Kelly
authors.affiliation: Department of Psychology, Fylde College, Lancaster University, Lancaster, LA1 4YF, United Kingdom.
authors.forename: Sandra I
authors.initials: SI
authors.lastname: Sünram-Lea
authors.affiliation: Department of Psychology, Fylde College, Lancaster University, Lancaster, LA1 4YF, United Kingdom.
authors.forename: Trevor J
authors.initials: TJ
authors.lastname: Crawford
mesh_terms: D000293:Adolescent; D000328:Adult; D001786:Blood Glucose / Q000032:analysis; D004311:Double-Blind Method; D005260:Female; D005947:Glucose / Q000008:administration & dosage*; D064368:Healthy Volunteers; D006801:Humans; D007389:Internal-External Control; D008297:Male; D009042:Motivation; D010919:Placebos; D012438:Saccades; D055815:Young Adult
chemical_list: D001786:Blood Glucose; D010919:Placebos; D005947:Glucose
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