Match List I with List II

List I	List II
A. A reinforcement that reinforces a response at unpredictable time intervals	I. Fixed-ratio schedule
B. A reinforcement that reinforces a response only after a specified time has lapsed	II. Variable-ratio schedule
C. A reinforcement that reinforces a response after an unpredictable number of responses	III. Fixed-interval schedule
D. A reinforcement that reinforces a response only after a specified number of responses	IV. Variable-interval schedule

1. AA-I, B-II, C-III, D-IV
2. BA-II, B-III, C-IV, D-I
3. CA-III, B-IV, C-I, D-II
4. DA-IV, B-III, C-II, D-I

Pick an option to check yourself, or open the answer below.

Show answer & explanation

Correct answer: D. A-IV, B-III, C-II, D-I

Explanation

Unpredictable time → variable interval; fixed time → fixed interval; unpredictable number → variable ratio; fixed number → fixed ratio.