Task difficulty effects on cardiac activity

Article Article scientifique Article Task difficulty effects on cardiac activity eng 2008-08-11 2008-08-11 author Richter Michael Department of Psychology, University of Geneva, Geneva, Switzerland. Michael.Richter@pse.unige.ch 587714 author Friedrich Antonia 637759 author Gendolla Guido H.E. 0000-0002-8066-0951 135519 Section de psychologie (PSICO) 869-875 10.1111/j.1469-8986.2008.00688.x 18665860 0048-5772 https://onlinelibrary.wiley.com/doi/10.1111/j.1469-8986.2008.00688.x An experiment with 64 participants manipulated task difficulty and assessed cardiac reactivity in active coping over four levels of demand. Participants performed a memory task while preejection period, heart rate, and blood pressure were assessed. In accordance with the theoretical predictions of R. A. Wright's (1996) integration of motivational intensity theory ( J. W. Brehm & E. A. Self, 1989 ) with Obrist's active coping approach ( P. A. Obrist, 1981 ), preejection period and systolic blood pressure reactivity increased with task difficulty across the first three difficulty levels. On the fourth difficulty level—where success was impossible—reactivity of both preejection period and systolic blood pressure were low. These findings provide the first clear evidence for the notion of Wright's integrative model that energy mobilization in active coping is mediated by beta‐adrenergic impact on the heart. Dewey 150 108 Section de psychologie 71 false 591 Geneva Motivation Lab Psychophysiology 45 5 d5361d25-5ec0-41e6-94d0-05878427a60f Article (Published version) Restricted Psychophys_2008_(pep).pdf 156572 application/pdf 843b38d57f58d14f69fdcd43d768c889a2a53e10343c1577328c57a1d8ad9025 restrictedAccess Faculté de psychologie et des sciences de l'éducation / Section de psychologie

Title	Published in	Access level	OA Policy	Year	Views	Downloads

Task difficulty effects on cardiac activity	Psychophysiology			2008	10	0

Archive ouverte UNIGE

Friedrich, Antonia