Table 3 represents a first attempt to synthesize these literatures. It lists primary dimensions of impulsivity that have been identified/studied across the personality and laboratory-based human studies and animal studies. Facets of impulsivity that have shown consistent relationships with alcohol use/problems (as reviewed early in this paper) are indicated with a shared superscript, and measures that show some preliminary evidence of tapping into the same facets of impulsivity are indicated together in a shaded or nonshaded box. This table is by no means exhaustive or complete; it only represents a starting point that we hope will generate hypotheses to guide future research. We are certain that many researchers would argue for additional tasks/measures for inclusion in various boxes in the table; this is exactly the point—to begin a dialogue, and hopefully to inspire studies to collect the requisite data to expand and solidify this table. Research of this sort, which attempts to relate measures of different facets of impulsivity across tasks and across species, is in its infancy. Many unresolved questions remain to be answered. For example, initial studies suggest
