Beyond dual systems: A genetically-informed, latent factor model of behavioral and self-report measures related to adolescent risk-taking

作者：Harden K Paige; Kretsch Natalie; Mann Frank D; Herzhoff Kathrin; Tackett Jennifer L; Steinberg Laurence; Tucker Drob Elliot M

来源：Developmental Cognitive Neuroscience, 2017, 25: 221-234.

DOI：10.1016/j.dcn.2016.12.007

• Dual systems
• Cognitive control
• Reward seeking
• Impulsivity
• Self-control
• Intelligence
• Delay discounting
• Risk-taking
• Addolescence

The dual systems model posits that adolescent risk-taking results from an imbalance between a cognitive control system and an incentive processing system. Researchers interested in understanding the development of adolescent risk-taking use a diverse array of behavioral and self-report measures to index cognitive control and incentive processing. It is currently unclear whether different measures commonly interpreted as indicators of the same psychological construct do, in fact, tap the same underlying dimension of individual differences. In a diverse sample of 810 adolescent twins and triplets (M age = 15.9 years, SD = 1.4 years) from the Texas Twin Project, we investigated the factor structure of fifteen self-report and task-based measures relevant to adolescent risk-taking. These measures can be organized into four factors, which we labeled premeditation, fearlessness, cognitive dyscontrol, and reward seeking. Most behavioral measures contained large amounts of task-specific variance; however, most genetic variance in each measure was shared with other measures of the corresponding factor. Behavior genetic analyses furtherindicated that genetic influences on cognitive dyscontrol overlapped nearly perfectly with genetic influences on IQ (r(A)= -0.91). These findings underscore the limitations of using single laboratory tasks inisolation, and indicate that the study of adolescent risk taking will benefit from applying multimethod approaches.

• 出版日期2017-6
• 单位西北大学