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Journal Article

Citation

Tuvblad C, Gao Y, Wang P, Raine A, Botwick T, Baker LA. J. Adolesc. 2013; 36(2): 245-255.

Affiliation

Department of Psychology, University of Southern California, 3620 S. McClintock Ave., Los Angeles, CA 90089-1061, USA. Electronic address: Tuvblad@usc.edu.

Copyright

(Copyright © 2013, Elsevier Publishing)

DOI

10.1016/j.adolescence.2012.10.006

PMID

23261073

Abstract

The present study examined the genetic and environmental etiology of decision-making (Iowa Gambling Task; Bechara, Damásio, Damásio, & Anderson, 1994), in a sample of twins at ages 11-13, 14-15, and 16-18 years. The variance across five 20-trial blocks could be explained by a latent "decision-making'' factor within each of the three times of IGT administration. This latent factor was modestly influenced by genetic factors, explaining 35%, 20% and 46% of the variance within each of the three times of IGT administration. The remaining variance was explained by the non-shared environment (65%, 80% and 54%, respectively). Block-specific non-shared environmental influences were also observed. The stability of decision-making was modest across development. Youth showed a trend to choose less risky decks at later ages, suggesting some improvement in task performance across development. These findings contribute to our understanding of decision-making by highlighting the particular importance of each person's unique experiences on individual differences.


Language: en

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