PSYB45H3 Chapter 8: CHAPTER 8.docx
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Respondent condition involves the manipulation of antecedent stimuli. Unconditioned responses: responses are elicited by antecedent stimuli even though no conditioning or learning has occurred. An ur occurs in all healthy ppl when an unconditioned stimulus (us) is presented. Humans have evolved to respond to uss because the urs have a survival value. Ivan pavolov was the first to demonstrate this ring bell, give dog meat, salivates. Just about any stimulus can become a conditioned stimulus if it is paired a number of times w a unconditioned stimulus. Timing of the neutral stimulus and unconditioned stimulus. The unconditioned stimulus should occur immediately after the onset of the neutral stimulus. The timing increases the likelihood that the neutral stimulus will become conditioned as a cs. Trace conditioning: the neutral stimulus precedes the unconditioned stimulus, but the ns ends before the. Here the sound then meat given to dog.
