5-CSRTT.

<p>Performance of alcohol-preferring rats (P, closed squares) and alcohol-non-preferring rats (NP, open circles) in the 5-CSRTT, during baseline sessions (ITI = 5s) and during the long ITI challenge session (ITI = 7s) before and after the 4-week alcohol intake. Data are means ± SE of % premature responding (a), attentional accuracy (b), % omissions (c), correct response latency (d), food magazine latency (e) and time spend nose-poking in the food magazine (f). All p<0.05: (≠) vs baseline A, (σ) vs previous sessions; (*) significant difference between P and NP rats in the same session; (•) vs baseline A in P rats, (∞) vs baseline A and B; (x) versus pre-alcohol sessions in NP rats.</p

Correlations between main variables.

<p>Correlational analysis of impulsive responses during the first long ITI session in the 5-CSRTT and the data from the 5^th session of the Pavlovian conditioned approach task: Impulsivity and goal-tracking responses (number of magazine nose-pokes) (a); impulsive responses and sign-tracking responses (number of lever presses) (b); goal-tracking and sign-tracking responses (c); goal-tracking responses and time spent nose-poking in the food magazine during the first long ITI session in the 5-CSRTT) (d). P(closed circles), NP (open circles).</p

Pavlovian conditioned approach.

<p>Acquisition of Pavlovian conditioned approach in alcohol-preferring rats (P, closed squares) and alcohol-non-preferring rats (NP, open circles). Data are means ± SE of total lever presses (sign-tracking responses, a), total magazine nose-pokes during the CS-lever presentations (goal-tracking responses, b), and total time spent nose-poking during the CS-lever presentations (c). All p<0.05: (*) significant group differences, (•) versus session 1 in NP rats.</p

Intermittent access two-bottle choice procedure.

<p>Data represent the mean ± SE of alcohol preference (a) and alcohol intake (g/kg/day) (b) during the 12 sessions of intermittent access to alcohol in alcohol-preferring rats (P, closed squares) and alcohol-non-preferring rats (NP, open circles). All p<0.05 (adjusted after Bonferroni correction): (*) significant group differences, (•) vs session 1.</p