Millisecond Forums

DPDT/ Delay Discounting

https://forums.millisecond.com/Topic16450.aspx

By lchang - 6/5/2015

Hi! I'm working with a data set for Delay Probability Discounting Task, someone who has all 5 indifference points for probability as well as all 5 indifference points for delay is marked someone who did not complete the task. I'm curious if there might be an explanation for this from the software, or if it was just the participant. Thanks!
By Dave - 6/5/2015

values.completed is set /onexptend

<expt DPDT>
/ preinstructions = (intro1, intro2)
/ postinstructions = (end)
/ blocks = [1=DPDT; 2=payoff]
/onexptend = [values.completed = 1]
</expt>

If it is zero, it would suggest that the procedure was terminated prematurely by the participant (e.g. by killing the script via the task manager). The participant's raw (trial-by-trial) data file might provide some pointers as to what happened when; without any additional information I cannot tell what happened, particularly if it's the only data set showing this anomaly.