Abstract
Forty water-deprived albino rats ran a straight alley with differently textured and colored startbox, runway, and goal box (GB) for 35 acquisition trials and were then extinguished to criterion. After random assignment to four conditions, Ss received three trials of 30 sec exposure to either regular GB with reward (Group LRA-1), novel GB with reward (Group LRA-2), regular GB without reward (Group C-1), or hold box without reward (Group C-2). Three test extinction trials in initial runway followed. All acquisition, extinction, treatment, and test trials were given one per day. Control group speeds did not differ significantly at any test trial. LRA-1 group medians exceeded controls at all test trials on both starting and running speeds, significantly so only on the former. LRA-2 group medians were slower than controls on test trial 1, but not on later test trials, and significantly so only for running speed.
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