Role of Restricted Running and Goal-Box Placements in the Double Runway Behavior of the Albino Rat
7 groups ( ns = 10) of albino rats received 40 acquisition trials (5/day) in a double alley under one of the following conditions: (1) 40 8-pellet rewarded GB1 placements; (2) 40 8-pellet rewarded run trials, RW1 and RW2; (3) 40 NR GB1 placements; (4) 40 8-pellet rewarded RW1-only trials, and (5) 40 NR run trials, RW1 and RW2. Following preshift training, 30 postshift trials were given under the following conditions: (1) one of the 8-pellet rewarded placements groups was shifted to NR, whereas the two remaining placement groups received the same GB1 conditions as in the preshift phase; all Ss in the 3 placement groups now ran RW2 only; (2) Ss in RW1-only group received 30 NR trials in GB1 and now ran RW1 and RW2; and (3) one group of eight-pellet rewarded Ss RW1 and RW. received 30 NR trials GB1, whereas the other two RW1 and RW2 groups remained as in the preshift phase. All Ss received one pellet in GB2. During acquisition, RW1 speeds were a direct positive function of GB1 magnitude, while RW2 speeds were an inverse function of amount received in GB1. The data are more supportive of a hypothesis based upon an odor-mediated, conditioned tendency to remain in GB1 rather than an emotionally based FE.