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question sheet 5 - 830:311H CONDITIONING AND LEARNING...

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830:311H CONDITIONING AND LEARNING Question Sheet 5, Chapter 4 (end) Chapter 4 (pp. 121-124; 137-140) 1. Why is the Pearce-Hall model called a CS-reduction theory? Discuss how it differs from the Rescorla-Wagner model. What unique predictions does it make about learning? “Reduces” study of C&L by emphasizing role of CS intensity (α) with regard to the degree to which conditioning occurs. Proposes that learning always influenced by animal’s attention to the CS; amount of attention paid to CS changes over trials; controlled by previous learning. Attention paid only to those CS whose meaning are not yet well understood; attend to a CS on Trial 2 only if US was poorly predicted on Trial 1 (explains: negative transfer and latent inhibition) Because CS comes first, it cannot tell anything about the US on the first trial. Predicts overshadowing in a configuration or compound stimulus one component of a compound stimulus (e.g., A in compound Ab ) is more salient or attention-getting than the other component (e.g.,
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