Pete Wegier

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In real-world decision making, choice outcomes, and their probabilities are often not known a priori but must be learned from experience. The dopamine hypothesis of cognitive aging predicts that component processes of experience-based decision making (information search and stimulus-reward association learning) decline with age. Many existing studies in(More)
Time pressure has been found to impact decision making in various ways, but studies on the effects time pressure in risky financial gambles have been largely limited to description-based decision tasks and to the gain domain. We present two experiments that investigated the effect of time pressure on decisions from description and decisions from experience,(More)
OBJECTIVE To determine whether the use of simulated experiences to communicate statistical information can improve an individual's understanding of conditional probabilities-specifically the positive predictive value (PPV) of prenatal screening tests for Down syndrome. METHODS In Experiment 1 (N=64) and Experiment 2 (N=180) participants were asked to(More)
Reward anticipation is associated with activity in the dopaminergic midbrain as well as the ventral striatum, amygdala, and medial prefrontal cortex. Dopaminergic neuromodulation declines with age, suggesting that incentive processing should also undergo age-related change. However, the literature is mixed, perhaps reflecting variation in the degree to(More)
The Attention Network Test (ANT) is widely used to capture group and individual differences in selective attention. Prior behavioral studies with younger and older adults have yielded mixed findings with respect to age differences in three putative attention networks (alerting, orienting, and executive control). To overcome the limitations of behavioral(More)
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