Relations between decision-making deficits and discriminating contingencies following brain injury

M. W. Schlund, G. M. Pace, John McGready

Research output: Contribution to journalArticle

Abstract

Deficits in decision-making characterized by failures to respond adaptively to consequences that follow responding are common following brain injury. To examine decision-making about consequences, individuals with and without acquired brain injury responded under different response-reinforcer contingencies. In two control conditions, reinforcement was contingent on responding and response repetition. Results showed responding (pressing four computer keys) by both groups produced similar amounts of reinforcement (money) and highlight equal sensitivity to money as a reinforcer. In subsequent experimental conditions, reinforcement was contingent upon varying responses. Results showed both groups produced variable response patterns, but injured subjects earned less reinforcement than controls. With instructions to vary responding across trials, injured subjects earned similar amounts of reinforcement as controls. Collectively, the results suggest reductions in sensitivity to contingencies may be present following injury and function as one behavioural mechanism of maladaptive decision-making.

Original languageEnglish (US)
Pages (from-to)1061-1071
Number of pages11
JournalBrain Injury
Volume15
Issue number12
DOIs
StatePublished - 2001
Externally publishedYes

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Brain Injuries
Decision Making
Reinforcement (Psychology)
Wounds and Injuries

ASJC Scopus subject areas

  • Clinical Neurology

Cite this

Relations between decision-making deficits and discriminating contingencies following brain injury. / Schlund, M. W.; Pace, G. M.; McGready, John.

In: Brain Injury, Vol. 15, No. 12, 2001, p. 1061-1071.

Research output: Contribution to journalArticle

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