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Publicação
Delay discounting in mild cognitive impairment
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Orientador(es)
Resumo(s)
Introduction
: Patients with mild cognitive impairme
nt (MCI) may make suboptimal decisions
particularly in complex situations, and thi
s could be due to temporal discounting, the
tendency to prefer immediate rewards over delayed but larger rewards. The present study
proposes to evaluate intertemporal prefere
nces in MCI patients as compared to healthy
controls.
Method
: Fifty-five patients with MCI and 57 h
ealthy controls underwent neuropsy-
chological evaluation and a delay discounting
questionnaire, which evaluates three para-
meters: hyperbolic discounting (
k
), the percentage of choices for delayed and later rewards
(%LL), and response consistency (Acc).
Results
: No significant differences were found in the
delay discounting questionnaire between MC
I patients and controls for the three reward
sizes considered, small, medium, and large, using both
k
and %LL parameters. There were
also no differences in the response consistency, Acc, between the two groups.
Conclusions
:
Patients with MCI perform similarly to healthy controls in a delay discounting task. Memory
deficits do not notably affect intertemporal preferences.
Descrição
Palavras-chave
Decision-making Delay discounting Memory Mild cognitive impairment Temporal preferences
Contexto Educativo
Citação
Journal of Clinical and Experimental Neuropsychology, 1-11. doi: 10.1080/13803395.2016.1226269
Editora
Taylor & Francis