Table 1.

Number of pairs exhibiting significant correlations in drinking patterns.

		Ethanol isolation 1	Ethanol pair	Water isolation 1	Water pair
Change	Correlation	11	12	14	14
	No correlation	6	5	3	3
No change	Correlation	12	12	12	15
	No correlation	3	3	3	0

The total number of pairs (32) is divided into groups where at least one subject changed the drinking pattern and those that did not (change, no change). For each group, the number of pairs exhibiting a significant correlation or not, when analyzed by the cross-correlation function within a lag time of 10 min is shown for each ethanol and water drinking patterns, in isolation and pair housing. There are clearly no significant differences between groups that did or did not change, between isolation and pairing, or between ethanol and water.