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Mean times to complete 5 cumulative seconds of drinking upon presentation of the target CS (X) in Experiment 4. See Table 4 for treatments of the four groups. Ov-NDeg = overshadowing and no degraded contingency; Ov-Deg = overshadowing and degraded contingency; Ext = extinction of the overshadowing stimulus; NExt = no extinction. Error bars denote standard errors of means.
