Table 3.

Behavioral Constructs and Measurement Included in Existing Impulsivity Research

Construct	Definition	Pure Measures	Impure Measures
Response Inhibition	Ability to withhold a prepotent response.	Go/No-Go Task; Stop-Signal Task; 5-CSRTT (Premature Responses)	Anti-Saccade Task
Delayed Consequence Sensitivity	Devaluation of a consequence as a function of its delay.	Delay Discounting Tasks (e.g., Monetary Choice Questionnaire; Titration Tasks)	Delay of Gratification
Attention	Capacity to selectively control allocation of attention (i.e., ability to concentrate of specific stimuli) and avoid interference.	Continuous Performance Test; 5-CSRTT (Accuracy)	Stroop Task; Immediate or Delayed Memory Task; Anti-Saccade Task
Risk Sensitivity	Sensitivity to risky or probabilistic decisions.	Probability Discounting	Balloon Analogue Risk Task (BART)

Note. Pure measures are those with comparably specific measurement of the construct. Impure measures are those influenced by multiple constructs or with less body of evidence supporting their use. See also Hamilton, Littlefield, et al., 2015; Hamilton, Mitchell, et al., 2015 for similar, independent consensus on related measurement issues.