We examine the impact of glucose on a Bayesian choice task that creates a separating equilibrium between high-level Bayesian choice and lower-level reinforcement heuristic choice. Consistent with a dual systems framework, we hypothesize that glucose administration will both increase reaction...

Physical activity level is becoming more recognized as a primary factor in overall human health and obesity. Humans possess a number of traits that influence their physical activity level. We examined whether having a high or low desire to engage in challenging mental activity predicted...

People differ in their diurnal (time-of-day) preferences—some are morning-types and others are evening-types. These differences are explored in a unique experiment design in which subjects are randomly assigned to produce paper airplanes at either 8:00 a.m. or 10:00 p.m. Our results show that...

We administer a unique online version of the Guessing Game where subject responses are collected across all 24 hours of the day. While time-of-day itself does not affect guesses, when combined with a trait-level sleepiness measure and previous night sleep, adverse sleep states lead to responses...

Research investigating risk preference has pointed towards motivation and ability as important factors for determining the strength and likelihood of the framing effect. In the current study we explored the influence of individual differences in motivation and ability through circadian rhythm....

We explore the behavioral consequences of sleep loss and time-of-day (circadian) effects on a particular type of decision making. Subject sleep is monitored for the week prior to a decision experiment, which is then conducted at 8 a.m. or 8 p.m. A validated circadian preference instrument allows...

In the current study we explore whether enriching the brain's supply of glucose will improve the quality and speed of decision making. Prior research shows that glucose enrichment supports cognition and more recent research has shown it can improve decision making on some tasks. To test our...

In the current study we explore whether enriching the brain's supply of glucose will improve the quality and speed of decision making. Prior research shows that glucose enrichment supports cognition and more recent research has shown it can improve decision making on some tasks. To test our...

In the current study we explore whether enriching the brain's supply of glucose will improve the quality and speed of decision making. Prior research shows that glucose enrichment supports cognition and more recent research has shown it can improve decision making on some tasks. To test our...