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ERIC Number: EJ892923
Record Type: Journal
Publication Date: 2010-Mar
Pages: 15
Abstractor: As Provided
Reference Count: N/A
ISSN: ISSN-1944-7515
Performance in Temporal Discounting Tasks by People with Intellectual Disabilities Reveals Difficulties in Decision-Making and Impulse Control
Willner, Paul; Bailey, Rebecca; Parry, Rhonwen; Dymond, Simon
American Journal on Intellectual and Developmental Disabilities, v115 n2 p157-171 Mar 2010
The subjective value of rewards declines as a function of the delay to receive them (temporal discounting). Three temporal discounting tasks that assessed preferences between small amounts of money (10 pence) over short delays (60 s), moderate amounts of money (10 British Pounds) over moderate delays (2 weeks), and large amounts of money (1000 British Pounds) over long delays (12 months) were presented to people with intellectual disabilities (Full-Scale IQ less than 70) and to a comparison group (ns = 20 for each group). Measures of IQ, financial knowledge, memory, and executive functioning were also obtained. Only a third of the service users were able to perform the temporal discounting tasks consistently, and they tended to respond impulsively. The proportion of participants responding consistently increased following training. Both the initial performance and the effect of training were related to executive functioning but not IQ.
American Association on Intellectual and Developmental Disabilities. P.O. Box 1897, Lawrence, KS 66044-1897. Tel: 785-843-1235; Fax: 785-843-1274; e-mail:; Web site:
Publication Type: Journal Articles; Reports - Research
Education Level: N/A
Audience: N/A
Language: English
Sponsor: N/A
Authoring Institution: N/A
Identifiers - Location: United Kingdom