Intertemporal Decision Making After Brain Injury: Amount-Dependent Steeper Discounting after Frontal Cortex Damage

Wojciech Białaszek , Bartłomiej Swebodziński , Paweł Ostaszewski

Abstract

Traumatic brain injuries to the frontal lobes are associated with many maladaptive forms of behavior. We investigated the association between brain damage and impulsivity, as measured by the rate of delay discounting (i.e., the extent to which future outcomes are devalued in time). The main aim of this study was to test the hypothesis of steeper discounting of different amounts in a group of patients with frontal lobe damage. We used a delay discounting task in the form of a structured interview. A total of 117 participants were divided into five groups: three neurological groups and two groups without brain damage. Our analyses showed that patients with focal damage to the frontal lobes demonstrated steeper delay discounting than other participants. Other clinical groups demonstrated similar discounting rates. The data pattern related to the magnitude effect on the group level suggested that the magnitude effect is absent in the group of patients with damage to the frontal lobes; however, results were less consistent on an individual level. Amount-dependent discounting was observed in only two groups, the healthy control group and the neurological group with other cortical areas damaged.
Author Wojciech Białaszek (Wydział Psychologii)
Wojciech Białaszek,,
- Wydział Psychologii
, Bartłomiej Swebodziński
Bartłomiej Swebodziński,,
-
, Paweł Ostaszewski (Wydział Psychologii)
Paweł Ostaszewski,,
- Wydział Psychologii
Journal seriesPolish Psychological Bulletin, ISSN 0079-2993, e-ISSN 1641-7844, (B 15 pkt)
Issue year2017
Vol48
No4
Pages456-463
Publication size in sheets0.5
Keywords in Englishimpulsivity, brain injury, delay discounting, frontal lobes, magnitude effect
ASJC Classification3200 General Psychology
DOIDOI:10.1515/ppb-2017-0052
URL https://www.degruyter.com/downloadpdf/j/ppb.2017.48.issue-4/ppb-2017-0052/ppb-2017-0052.pdf
Languageen angielski
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[Polish Psychological Bulletin] Intertemporal Decision Making After Brain Injury Amount-Dependent Steeper Discounting after Frontal Cortex Damage.pdf 277.41 KB
Additional file
2018-01-24-14-58-46-585.pdf 25.2 KB
Białaszek_osw3.pdf 304.07 KB
Score (nominal)15
Score sourcejournalList
Publication indicators Scopus SNIP (Source Normalised Impact per Paper): 2017 = 0.232
Citation count*1 (2020-12-02)
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