“…Cross-sectional studies have shown that alcoholics sober for several months (Sullivan et al, 2000d;Sullivan et al, 2002;Meyerhoff, 2005;Rosenbloom et al, 2005), one year (Hochla et al, 1982;Parsons et al, 1990;Munro et al, 2000;Rosenbloom et al, 2004), or as long as seven years (Brandt et al, 1983) may still show memory deficits relative to non-alcoholic controls. However, other crosssectional studies have shown that performance on memory tests is related to length of abstinence (Joyce and Robbins, 1993;Oscar-Berman et al, 2004), and that alcoholics sober for more than 4 years are undistinguishable from controls on memory testing (Grant et al, 1984;Reed et al, 1992;Oscar-Berman et al, 2004;Fein et al, 2006). Furthermore, a longitudinal study showed memory improvement relative to baseline after 4 years of abstinence (Rosenbloom et al, 2004).…”