Abstract:Four groups of rats were conditioned to avoid shock in a two-way shuttlebox. During acquisition. each response both precluded a brief programmed shock and produced a I-sec feedback signal. CS termination was not permitted during either acquisition or' extinction. During extinction, response-produced or yoked feedback was combined with either 100% response-independent shock or no-shock conditions. Greatest resistance to extinction of avoidance behavior was obtained when response-produced feedback occurred in th… Show more
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