Personality and Basic Motivational systems: GRAY and BIS/BAS
3 important questions on Personality and Basic Motivational systems: GRAY and BIS/BAS
What was the first study to report a link between a personality variable and BMI?
Franken & Muris, 2005
- they explicitly tested the link between Gray's BAS concept and body mass index (BMI)
- tested 99 female undergraduates
Results = sensitivity to reward score correlated with BMI score & sensitivity to reward score related with food craving score
- they explicitly tested the link between Gray's BAS concept and body mass index (BMI)
- tested 99 female undergraduates
Results = sensitivity to reward score correlated with BMI score & sensitivity to reward score related with food craving score
What experiment shows that individual differences in reward drive predict neural responses to images of food?
Beaver, Lawerence et al., 2006 - they found that response to appetising foods is strongly correlated with BAS drive scores in classic reward areas
What experiment shows that the hippocampus and the amygdala are involved in anticipation?
Hahn et al.
Task: monetary incentive delay task in which participants must respond to a stimulus within a certain time. A cue before each trial signals whether failure will engender: no loss, a small loss, or a large loss. This is followed by a delay prior to the presentation of the stimulus
Results: both the small and large loss conditions elicited hippocampal and amygdalar activation during the delay period, compared to the loss condition
THIS CORRESPONDS WITH GRAY'S THEORY
Task: monetary incentive delay task in which participants must respond to a stimulus within a certain time. A cue before each trial signals whether failure will engender: no loss, a small loss, or a large loss. This is followed by a delay prior to the presentation of the stimulus
Results: both the small and large loss conditions elicited hippocampal and amygdalar activation during the delay period, compared to the loss condition
THIS CORRESPONDS WITH GRAY'S THEORY
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