Gambling Task (Time Pressured)


When and how do people take risks to get rewards?

Gambling tasks measure people's willingness to gamble when faced with different scenarios of risk and reward. Risk-taking behavior is related to the neurotransmitter dopamine. Dopamine declines with age and has been linked to many physical and mental states, such as anxiety. In fact, people with an anxiety disorder have been found to take fewer risks to get rewards. Past research has also shown that adolescents take more risks, but only in situations where there's a lot to gain.
In this version of the task, participants are under time pressure. They will see a countdown running while they made their decision. If the countdown reaches zero, they will lose the trial, and a fixed amount of points will be deducted from their overall score.

Resources:
  • Charpentier, C. J., Aylward, J., Roiser, J. P., & Robinson, O. J. (2017). Enhanced risk aversion, but not loss aversion, in unmedicated pathological anxiety. Biological Psychiatry, 81(12), 1014-1022.
  • Baraniuk, C. (2016). Why gamblers get high even when they lose. BBC.
  • Collins, T. (2019). Risk-taking may be caused by random changes in the brain which change every minute depending on dopamine levels. Daily Mail.

Parameters
The following features can be tweaked (default values in parentheses):
  • Task instructions
  • Number of trials (60)
  • Number of points participants start the task with (500)
  • Whether trials should be randomized (yes)
  • Which question is asked between trials and how often
  • Which question is asked before and after the task
  • Language (English, Spanish, Chinese)
  • countDownMilliseconds: Amount of time in millisecond that is given to the participant before the trial times out
  • malusTimeout: Amount of points to take from the subject’s score if they do not answer on time
  • instructions_timePressure: Instructions for the time pressure

What data is collected? How is it scored?
Three variables are recorded:
  • gamble_percentage_gain
    Percentage of trials in which participants chose to gamble in the gain condition. Participants can gamble to win a large number of points (e.g., 51) or nothing (i.e., 0), OR gain a fewer amount of points (e.g., 30)
  • gamble_percentage_mixed
    Percentage of trials in which participants chose to gamble in the mixed condition. Participants can gamble to win (e.g., 40) or lose points (e.g., -26), OR not win points (i.e., 0)
  • gamble_percentage_lose
    Percentage of trials in which participants chose to gamble in the lose condition. Participants can gamble on losing nothing (i.e., 0) or lose lots of points (e.g., -53), OR lose fewer points (e.g., -26)
  • last_score
    The number of points the participant has at the end of the last trial.
  • withinTask_ratings
    A chronological list of the rating (slider) that were given by the participant throughout the task.
  • trials_timedOut
    The amount of trials where the participant let the countdown run out.

What participants see before taking the task

In this gambling task, you can win or lose points by spinning the wheel of fortune or playing it safe.

What participants see after taking the task

Using this type of gambling task, researchers have shown that people take fewer risks to try to get rewards as they get older. This version of the task also tests if getting rewards makes you happy and if your level of anxiety affects if and when you take risks.

Aggregate Variables

These data are automatically written to a csv file upon completion of the task

  • trials_timedOut
  • gamble_percentage_gain
  • gamble_percentage_mixed
  • gamble_percentage_lose
  • last_score
  • withinTask_ratings

Duration

7 mins

Resources

  • Charpentier, C. J., Aylward, J., Roiser, J. P., & Robinson, O. J. (2017). Enhanced risk aversion, but not loss aversion, in unmedicated pathological anxiety. Biological Psychiatry, 81(12), 1014-1022.
  • Baraniuk, C. (2016). Why gamblers get high even when they lose. BBC.
  • Collins, T. (2019). Risk-taking may be caused by random changes in the brain which change every minute depending on dopamine levels. Daily Mail.

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