Document Detail

Time preferences in long-tailed macaques (Macaca fascicularis) and humans (Homo sapiens).
MedLine Citation:
PMID:  22843198     Owner:  NLM     Status:  Publisher    
Rosati et al. (Curr Biol 17(19):1663-1668, 2007) found in a self-control test in which choice was between a smaller, immediately delivered food and a larger, delayed food, that chimpanzees preferred the larger reward (self-control); humans, however, preferred the smaller reward (impulsivity). They attributed their results to a species difference in self-control. In Experiment 1, monkeys (long-tailed macaques) were exposed to a self-control task in two conditions: where the food was hidden under differently colored bowls and where it was visible. When these two conditions were compared, choice shifted from greater preference for the impulsive alternative in the hidden condition to greater preference for the self-control alternative in the visible condition. Additionally, in both conditions, preference shifted from self-control to impulsivity over sessions. These results were explained in terms of the reversed-contingency effect (a propensity to reach for more over less when rewards are visible) and not to a capacity for self-control. In Experiment 2, humans that demonstrated preference for more over less in choice preferred the impulsive alternative when choice to either alternative was followed by the same intertrial interval-a preference that accelerates trial rates relative to preference of the self-control alternative. When trial rates were equated so that neither choice accelerated session's end, humans demonstrated self-control. These results suggest that Rosati et al.'s demonstration of impulsivity in humans was due to participants' desire to minimize session time.
Emilie Genty; Heather Karpel; Alan Silberberg
Related Documents :
11720228 - Effectiveness of hvac duct cleaning procedures in improving indoor air quality.
1930068 - Prescriptive eyeglass use by u.s. navy jet pilots: effects on air-to-air target detection.
9861178 - Correlation between the prevalence of certain fungi and sick building syndrome.
21924698 - Accumulation and toxicity of aluminium-contaminated food in the freshwater crayfish, pa...
3189958 - Incidence of digestive diseases in patients with adverse reactions to foods.
9356888 - Food cravings in women with a history of anorexia nervosa.
Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2012-7-28
Journal Detail:
Title:  Animal cognition     Volume:  -     ISSN:  1435-9456     ISO Abbreviation:  -     Publication Date:  2012 Jul 
Date Detail:
Created Date:  2012-7-30     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  9814573     Medline TA:  Anim Cogn     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
Centre de Primatologie de l'Université de Strasbourg, Strasbourg, France.
Export Citation:
APA/MLA Format     Download EndNote     Download BibTex
MeSH Terms

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

Previous Document:  Cataract-associated D3Y mutation of human connexin46 (hCx46) increases the dye coupling of gap junct...
Next Document:  Contrasting effects of sunitinib within in vivo models of metastasis.