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. 2009 Jun;23(2):315-28.
doi: 10.1037/a0015834.

Behavioral inhibition and activation systems: differences in substance use expectancy organization and activation in memory

Jeffrey S Simons  1 , Robert D Dvorak, Cathy Lau-Barraco
Affiliations

Behavioral inhibition and activation systems: differences in substance use expectancy organization and activation in memory

Jeffrey S Simons et al. Psychol Addict Behav. 2009 Jun.

Abstract

We used multidimensional scaling to model the semantic network of alcohol and marijuana expectancies (N=897). Preference mapping was used to estimate vectors representing patterns of activation through the network as a function of levels of behavioral inhibition (BIS) and behavioral activation (BAS). Individuals with low BIS combined with high BAS levels exhibited patterns of activation emphasizing behavioral activation similar to heavier drug users in previous research. High BIS, low BAS individuals exhibited activation patterns with greater emphasis on inhibitory expectancies similar to low-level users. Differences in expectancy activation patterns were maintained after controlling for substance use and gender. Individual differences in BIS/BAS are associated with the organization of semantic networks and patterns of activation of expectancies contributing to differences in substance use behavior.

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Figures

Figure 1
Figure 1
MDS ALSCAL configuration of alcohol expectancies with PREFMAP vectors for SP/SR groups. Expectancy means for the groups are adjusted to control for alcohol consumption and / or gender. Solid arrowhead vectors control for gender. Open arrowhead vectors control for gender and alcohol consumption.
Figure 2
Figure 2
MDS ALSCAL configuration of marijuana expectancies with PREFMAP vectors for SP/SR groups. Expectancy means for the groups are adjusted to control for marijuana use frequency and / or gender. Solid arrowhead vectors control for gender. Open arrowhead vectors control for gender and marijuana use.
Figure 3
Figure 3
MDS ALSCAL configuration of marijuana expectancies among non-users with PREFMAP vectors for SP/SR groups. Expectancy means are adjusted to control for gender differences across the groups.
See this image and copyright information in PMC

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