Table 1.

Description of primary and secondary outcome variables of PRLT.

Outcome Variables	Description
Switches	Total number of times within the 1-hour testing session that the reward contingencies of the two stimuli reversed
Trials to First Criterion	Number of trials completed by the subject before attaining the first criterion (8 consecutive target responses)
Trials for Reversal 1	Trials taken by the subject to make 8 consecutive correct responses following the first reversal of reward contingency (i.e. number of trials completed by the subject within the second block of testing)
Premature Responses	Total number of responses made before presentation of stimuli across all trials
Omissions	Total number of trials in which no response was made
Mean Target Latency	Mean latency to respond to the target stimulus
Mean Non-Target Latency	Mean latency to respond to the non-target stimulus
Mean Reward Latency	Mean latency to collect rewards
Target Win-Stay Ratio	Metric of subjects’ tendency to choose the target (more frequently rewarded) stimulus again after choosing, and being rewarded by, that stimulus in the preceding trial
Target Lose-Shift Ratio	Metric of subjects’ tendency to choose the non-target (less frequently rewarded) stimulus after being punished by the target stimulus in the preceding trial
Non-Target Win-Stay Ratio	Metric of subjects’ tendency to choose the non-target stimulus again after being rewarded by that stimulus in the preceding trial.
Non-Target Lose-Shift Ratio	Metric of subjects’ tendency to choose the target stimulus after being punished by the non-target stimulus in the preceding trial
Total Trials	Total number of trials completed within entire testing session

Note: Bold = primary outcome variable