In this paper, we examine the effects of three video game variables: camera perspective (1 st person versus 3 rd person), session duration, and repeated play on training participants to mitigate three cognitive biases. We developed a 70 minute, 3D immersive video game for use as an experimentation test bed. One-hundred and sixty three participants either watched an instructional decision video or played one of the four versions of the game. Each participant's learning was assessed by comparing his or her post-test scores and pre-test scores for knowledge of the biases and ability to mitigate them. Results indicated that repeated game play across two sessions produced the largest improvement in learning, and was more effective than the instructional decision video and single session game for mitigating biases. Surprisingly, session duration did not improve learning, and results were mixed for the third person perspective improved learning. Overall, the video game did improve participant's ability to learn and to mitigate three cognitive biases. Implications for training using video game are discussed.

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