Investigation of Risk Taking Behavior and Outcomes in Decision Making with Modified BART (m-BART)

Taskin K., GÖKÇAY D.

International Conference on Affective Computing and Intelligent Interaction (ACII), Xian, China, 21 - 24 September 2015, pp.302-307 identifier

  • Publication Type: Conference Paper / Full Text
  • City: Xian
  • Country: China
  • Page Numbers: pp.302-307
  • Keywords: Decision making, Risk taking, Pupil dilation, Uncertainty, Emotion, Dynamic systems, SCALE, PUPIL
  • Middle East Technical University Affiliated: Yes


Responses to risky choices were collected and analyzed in a continuous, engaging and decomposable risk taking task; a slightly modified version of BART (Balloon Analog Risk Task [1]). Pupil dilation data throughout the experiment were collected and analyzed to understand participants' physiological expressions under risky choices. Participants were also administered a survey, prior to the experiment to monitor individual risk taking attitudes. A thorough analysis of responses indicated a dynamic system consisting of risk taking or aversive states. Participants' pupil dilation rates were predictable from this dynamical model abstracted from consecutive responses. These findings may lead to a model that fuses affective and cognitive aspects within risky uncertain decisions. Natural risk tendencies, extracted from the survey had no statistically significant effect on the results.