In risky blocks of IGT as the task progresses, negative beliefs about uncontrollability and danger subscale scores of metacognition has a negative effect on advantageous decision making, whilst a higher score on cognitive confidence subscale predicts disadvantageous decision making. Study showed there is a difference between healthy controls' learning strategies and this difference reflected to their decision-making performances. Results indicated that group with knowledge had significantly higher net scores and consistently improved their performances across 5 blocks of IGT than group with no explicit knowledge. As in conventional analysis of IGT, each block's net score was calculated. After completing task implementations, each participant was asked a list of questions relating to their strategy on IGT and categorized into two groups depending on their level of explicit knowledge. 76 female and 12 male students at İstanbul Kultur University completed the IGT and Metacognition Questionnaire-30 (MCQ-30). Differences in decision-making performances of healthy participants predicted by metacognition levels and having explicit knowledge during IGT were examined. The Iowa Gambling Task (IGT) is a popular neuropsychological task that assesses decision-making through reward and punishment in the context of learning from past experiences. Decision-making is an essential cognitive function in everyday life.

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