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Davison, Michael; Krageloh, Christian U.; Fraser, Mhoyra; Breier, Bernhard H. – Journal of the Experimental Analysis of Behavior, 2007
Two groups of 10 male rats were trained to nose poke for food pellets at four alternatives that provided differing rates of pellet delivery on aperiodic schedules. After a fixed number of pellets had been delivered, 5, 10 or 20 in different conditions of the experiment, a 10-s blackout occurred, and the locations of the differing rates of pellet…
Descriptors: Pregnancy, Computation, Nutrition, Mothers