Template: Balloon Analogue Risk Task (BART)
Balloon Analogue Risk Task (BART)

Required Experiment Builder Version: 1.4.290 or higher
EyeLink Required: No
Type: Complete Example
Difficulty Level: Intermediate

This example illustrates:
  • How to use Custom Class to generate the balloon sizes on each trial
  • How to use Result File to save trial performance
  • How to use Mouse and Keyboard triggers as participant inputs.
  • How to use Sound nodes to play different task feedback (i.e. Cash out or Balloon pop)

This example is adapted after the experiment in the following paper:
  • Lejuez, C. W., Read, J. P., Kahler, C. W., Richards, J. B., Ramsey, S. E., Stuart, G. L., Strong, D. R., & Brown, R. A. (2002). Evaluation of a Behavioral Measure of Risk-Taking: The Balloon Analogue Risk Task (BART). Journal of Experimental Psychology: Applied, 8(2), 75-84.
Balloon Analogue Risk Task (BART) a computer simulated balloon that participants inflate by clicking a button on the screen using a computer mouse. Each click of the button inflates the balloon a small amount and earns 5 cents in a temporary bank. Participants are exposed to 90 different balloons, with each balloon having a different explosion point; weaker balloons will pop after only a few pumps, while stronger balloons can reach a size that fills the entire computer screen. Explosions result in the loss of accumulated money in the temporary bank, but prior to an explosion, participants can press a collect button that transfers their money to a permanent bank. Therefore, in deciding whether to make each pump, the participant must balance the potential gain of accruing more money against the potential risk of losing all money accrued for that balloon. The participant's riskiness is indexed as the average number of pumps across balloons that did not explode. Studies have shown a strong correlation between riskiness on the BART and engagement in real-world risk-taking behaviors.

  1. Download the BART.ebz example from this message.
  2. Launch the Experiment Builder application.
  3. Unpack the BART.ebz file to a location on your Experiment Builder PC with "File -> Unpack".
  4. Open the project in Experiment Builder.
  5. Deploy the project to a new folder.
  6. Run the BART.exe from the deployed directory.

.ebz   BART.ebz (Size: 214.57 KB / Downloads: 14)