If the balloon pops, all rewards for that balloon are lost, or the subject may choose to stop inflating and bank the reward for that balloon at any time. Therefore, more key-presses equate to greater reward, but also greater probability of popping and cancelling rewards for that trial. The BART assumes that those with an affinity for risk-taking are more likely to pop the balloon, earning less reward overall than the typical population. Iowa Gambling Task
The Iowa gambling task  (IGT) is a test originally meant to measure decision making specifically within individuals who have ventromedial prefrontal cortex damage. The concept of impulsivity as relates to the IGT is one in which impulsive decisions are a function of an individuals lack of ability to make rational decisions over time due to an over amplification of emotional/somatic  reward. In the IGT individuals are provided four decks of cards to choose from. Two of these decks provide much higher rewards but the deductions are also much higher while the second two decks have lower rewards per card but also much lower deductions. Over time anyone who chooses predominantly from the high rewards decks will lose money while those who choose from the smaller rewards decks will gain money. The IGT uses hot and cold processes in its concept of decision making. Hot decision making involves emotional responses to the material presented based on motivation related to reward and punishment. Cold processes occur when an individual uses rational cognitive determinations when making decisions.
See also
List of MeSH codes (C19)
List of ICD-9 codes 240-279: Endocrine, nutritional and metabolic diseases, and immunity disorders

References
External links

Endocrine+system+diseases at the US National Library of Medicine Medical Subject Headings (MeSH)
MedlinePlus Overview endocrinediseases