Extended Data Fig. 5: Lottery (revealed economic preference) task.
From: Predictors of risky foraging behaviour in healthy young people

The roulette task involved a choice between the sure amount (upper left) and a four-sector roulette, just complex enough to define an Expectation, Variance and Skewness over roulette outcomes. The square in the middle of the roulette indicated a timer to maintain a reasonable pace of trials.