impact of task-irrelevant stimuli (e.g. Pavlovian examinations of context effects) and distorted estimates of elapsed time (e.g. the peak procedure for timing). However, individual differences in these measures have not been a primary focus of interest for researchers, nor have data been interpreted in an impulsivity context. In addition, there is very little work in the animal literature (or human literature for that matter) on how chronic alcohol use and dependence influence impulsivity. Future work in this area would be highly valuable.