Journal of Information Organization Masa Vukcevic Markovic 8 4 2018 http://www.dline.info/jio/fulltext/v8n4/jiov8n4_1.pdf Somatic Marker Hypothesis (SMH) suggests that decision making in uncertainty relays on somatic markers – emotional reactions reflected in bodily states which lead person towards advantageous decision making. Authors of SMH created a task aiming to access decision making in uncertainty – Iowa Gambling Task (IGT), suggesting that since healthy participants tend to develop advantageous decision-making strategy, they will have good IGT performance. Recent studies however, question good IGT performance among healthy participants thus imposing question on their advantageous decisionmaking strategies. The aim of this study was to explore IGT performance among healthy participants. Participants (N=268) filled standard version of IGT, consisting of 100 trials in which participants select cards from four decks: A and B, that bring higher rewards and penalties (good decks) and C and D that bring small rewards and penalties (bad decks). At the beginning of the IGT, participants get 2000$ of play money, with instruction to try to gain as much money as possible. Results show that participants tend to lose rather than gain money, with almost half of participants showing impaired IGT performance. In addition, results indicate that frequency of punishment, rather than overall goodness or decks is factor relevant for specific deck selection. Study results question wheatear healthy participants apply advantageous decision-making strategies when performing IGT, indicating that future studies are needed in order to explore factors contributing to advantageous decision making in uncertainty.