LR can be assessed in an alcohol challenge using a subjective high scale (Schuckit, 1994; Schuckit et al., 1997a; Schuckit et al., 2009), or a sensation scale (King et al., 2002) These scales capture the degree to which an individual experiences a response after consuming alcohol. An additional method for assessing the level of response is the Self Reported Effects of Alcohol (SRE) scale developed by Schuckit et al (1997a). The SRE is a 12-item instrument used to retrospectively assess the degree to which an individual experiences physiological consequences of elevated alcohol intake (Schuckit et al., 1997a; Schuckit et al., 1997b). It acts as a measure of response to alcohol by recording information on the number of standard drinks needed to evoke a sensation associated with alcohol, such as feeling different, dizziness, stumbling when walking or blackouts (Schuckit et al., 1997a). This is recorded for three periods in the individual’s lifetime – period of first five times the individual had a drink, period of regular drinking, and period of heaviest drinking.