TY  - JOUR
A1  - Michałowski, Jarosław M.
A1  - Wiwatowska, Ewa
A1  - Weymar, Mathias
T1  - Brain potentials reveal reduced attention and error-processing during a monetary Go/No-Go task in procrastination
JF  - Scientific reports
N2  - Procrastination is a self-regulatory problem of voluntarily and destructively delaying intended and necessary or personally important tasks. Previous studies showed that procrastination is associated with executive dysfunctions that seem to be particularly strong in punishing contexts. In the present event-related potential (ERP) study a monetary version of the parametric Go/No-Go task was performed by high and low academic procrastinators to verify the influence of motivational context (reward vs. punishment expectation) and task difficulty (easy vs. hard) on procrastination-related executive dysfunctions. The results revealed increased post-error slowing along with reduced P300 and error-related negativity (ERN) amplitudes in high (vs. low) procrastination participants-effects that indicate impaired attention and error-related processing in this group. This pattern of results did not differ as a function of task difficulty and motivation condition. However, when the task got more difficult executive attention deficits became even more apparent at the behavioral level in high procrastinators, as indexed by increased reaction time variability. The findings substantiate prior preliminary evidence that procrastinators show difficulties in certain aspects of executive functioning (in attention and error processing) during execution of task-relevant behavior, which may be more apparent in highly demanding situations.
KW  - Attention
KW  - Cognitive control
KW  - Motivation
KW  - Neurophysiology
KW  - Neuroscience
KW  - Psychology
KW  - Reward
Y1  - 2020
U6  - https://doi.org/10.1038/s41598-020-75311-2
SN  - 2045-2322
VL  - 10
IS  - 1
PB  - Macmillan Publishers Limited, part of Springer Nature
CY  - London
ER  - 
TY  - JOUR
A1  - Schinköth, Michaela
A1  - Weymar, Mathias
A1  - Brand, Ralf
T1  - Listening to the heart
BT  - Getting closer to the somatic core of affective valuation of exercise through heart rate variability analysis
JF  - Psychology of sport and exercise
N2  - Objective: The affective-reflective theory of physical inactivity and exercise suggests that the mere thought of exercise can lead to an immediate somato-affective response which, if negative, will drive a physically inactive person to maintain his or her current exercise-avoidant behavior. This study aimed to test the assumption that the somatic core of this affective response can be identified by means of heart rate variability (HRV) analysis. Design: This study followed a within-subject experimental design. Method. Participants were 91 adult men and women whose HR and HRV were monitored whilst they viewed exercise-related and control pictures in a laboratory setting. Results: Analyses revealed a decrease in HRV during the viewing of exercise-related pictures in less physically active participants. These participants reported that the same pictures elicited feelings with relatively low affective valence and arousal. There were no changes in HR.
KW  - Dual-process
KW  - Motivation
KW  - Valence
KW  - Arousal
KW  - Psychophysiology
KW  - Self-assessment manikin (SAM)
Y1  - 2018
U6  - https://doi.org/10.1016/j.psychsport.2019.101541
SN  - 1469-0292
SN  - 1878-5476
VL  - 45
PB  - Elsevier
CY  - Amsterdam
ER  -