PSYC 351 Chapter Notes - Chapter 4: Foodborne Illness, Habituation, Latent Inhibition
2 Nov 2016
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Sucrose pellets could be either a us or a cs depending on how presentations of the pellets are related to other stimuli in the situation. Highly familiar stimuli elicit less vigorous reactions than do novel stimuli: latent-inhibition/cs-preexposure effect. Phase 1: given repeated presentations of the cs by itself. Cs preexposure makes the cs highly familiar and of no particular significance (because at this point the cs is presented alone). Phase 2: cs is paired with a us using conventional classical cond"n procedures. Result = participants are slower to acquire responding because of the cs exposure. Latent inhibition is similar to habituation (inconsequential = no us) Appears to protect the organism from information overload by attenuating the processing of previously irrelevant stimuli. Cs preexposure reduces attention of the cs. Schizophrenia: inability to supress attention to irrelevant stimuli. Become a major tool for studying the cognitive dysfunctions that accompany schizophrenia: us-preexposure effect.
