Subjects completed a baseline stimulus matching procedure designed to produce two symmetrical stimulus relations; A1-B1 and A2-B2. Using A1, B1, and two novel stimuli, subjects were then trained to produce a common key-press response for two stimuli and a second key-press response for two further stimuli across two blocks of response training.…

Learning and memory are central topics in behavioral neuroscience, and inbred mice strains are widely investigated. However, operant conditioning techniques are not as extensively used in this field as they should be, given the effectiveness of the methodology of the experimental analysis of behavior. In the present study, male C57Bl/6 mice,…

Understanding the function of the distinct amygdaloid nuclei in learning comprises a major challenge. In the two studies described herein, we used c-Fos immunolabeling to compare the engagement of various nuclei of the amygdala in appetitive and aversive instrumental training procedures. In the first experiment, rats that had already acquired a…

Chapters contained in this volume, each with a list of references appended, are: "Scientific Psychology in Transition" by Gregory A. Kimble; "Higher Mental Processes as the Bases for the Laws of Conditioning" by Eli Saltz; "Reification and Reality in Conditioning Paradigms: Implications of Results When Modes of Reinforcement are Changed" by David…