An investigation of the neuropsychological processes underlying ethical decision making.

This study will investigate the influence of reward sensitivity on cheating behavior via experimental manipulation of reward sensitivity using testosterone.

Inclusion Criteria:

• males between 18 and 25

Exclusion Criteria:

• recruitment will be limited to male participants between 18 and 25 years who have no current conditions that would preclude the use of testosterone. Specific exclusion criteria are:
• women of all ages
• males younger than 18 years and older than 25 years
• self-report discomfort with ingestion of testosterone for the purpose of this study
• body mass index lower than 18 or higher than 27
• prior diagnosis of major depression, posttraumatic stress disorder, phobia, anxiety disorder, or other psychiatric conditions
• first-degree relatives diagnosed with a psychiatric disorder
• presence of a medical condition that would preclude the use of testosterone
• use of medications that would preclude the use of testosterone
• consumption of more than 5 cigarettes a day
• current use of testosterone enhancing products, such as gels, creams, and injections