A modified sucrose-fading procedure was adapted from Samson (1986) where the animals were given access to both a water bottle and a 10% ethanol solution continuously (n=10), 7 days a week. On the first day of exposure, a 10S/10E mixture of 10% sucrose (w/v) and 10% ethanol (v/v) was presented for 5 consecutive days. This procedure was repeated for a 5S/10E and 2S/10E solution until a 10% ethanol solution alone was presented in the home cage. Measurements for this group were collected 5 days a week starting Monday morning and at every 24-hour interval following data collection. The placement of the ethanol bottle was alternated daily to control for side preferences.
