Abstract
P. Perruchet (1985b) showed a double dissociation of conditioned responses (CRs) and expectancy for an airpuff unconditioned stimulus (US) in a 50% partial reinforcement schedule in human eyeblink conditioning. In the Perruchet effect, participants show an increase in CRs and a concurrent decrease in expectancy for the airpuff across runs of reinforced trials; conversely, participants show a decrease in CRs and a concurrent increase in expectancy for the airpuff across runs of nonreinforced trials. Three eyeblink conditioning experiments investigated whether the linear trend in eyeblink CRs in the Perruchet effect is a result of changes in associative strength of the conditioned stimulus (CS), US sensitization, or learning the precise timing of the US. Experiments 1 and 2 demonstrated that the linear trend in eyeblink CRs is not the result of US sensitization. Experiment 3 showed that the linear trend in eyeblink CRs is present with both a fixed and a variable CS-US interval and so is not the result of learning the precise timing of the US. The results are difficult to reconcile with a single learning process model of associative learning in which expectancy mediates CRs.
Original language | English |
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Pages (from-to) | 169-176 |
Number of pages | 0 |
Journal | J Exp Psychol Anim Behav Process |
Volume | 35 |
Issue number | 2 |
DOIs | |
Publication status | Published - Apr 2009 |
Keywords
- Adolescent
- Adult
- Association Learning
- Conditioning
- Classical
- Eyelid
- Euphrasia
- Extinction
- Psychological
- Female
- Humans
- Male
- Middle Aged
- Physical Stimulation
- Psychological Theory
- Reinforcement Schedule
- Reinforcement
- Psychology
- Young Adult