Among the four time-relation classical-conditioning procedures, which one is reported to be the most effective for acquiring a CR?
ADelayed conditioning, where the CS begins before and overlaps the US
BSimultaneous conditioning, where the CS and US are presented together
CTrace conditioning, where the CS ends well before the US begins
DBackward conditioning, where the US comes before the CS appears
Answer & Solution
Correct answer: A. Delayed conditioning, where the CS begins before and overlaps the US
1. The chapter lists four time-relation classical-conditioning procedures.
2. Simultaneous, delayed and trace are forward procedures; the fourth is backward.
3. It states that the delayed conditioning procedure is the most effective way to acquire a CR.
4. Simultaneous and trace also lead to acquisition but require many more trials.
5. Backward conditioning produces very rare acquisition of the response.
6. Hence the most effective time-relation procedure is delayed conditioning.
_Source: NCERT Class 11 Psychology Ch 5 "Learning", p. 81, Determinants of Classical Conditioning_
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