marginally significantP = 0.060
Despite this caveat, the control preference was marginally significant (5/6, X 2 = 5.6, df = 2, P = 0.060), whereas analysis of the CPP rats that swam to the pre-trained over the mass trained annulus was significant (6/7, X 2 = 7.4, df = 2, P = 0.025).