Responding under a VI schedule of reinforcement

a. will be slower than that on a VR schedule of reinforcement when the rates of reinforcement on the two schedules are equated.
b. resembles that on an FI schedule of reinforcement. Following the reinforcer there is a period of no responding, followed by a rapid rise in responding.
c. is usually sporadic (now fast, now slow) rather than steady.
d. shows the same short pause immediately after reinforcement that an FR schedule produces.

a. will be slower than that on a VR schedule of reinforcement when the rates of reinforcement on the two schedules are equated.
Answer feedback: VI schedules characteristically produce steady rates of responding—smooth lines in a cumulative record rather than the scalloped pattern that characterizes FI responding or the pausing after reinforcement that is typical of FR responding. However, the rates of responding maintained by VI schedules are lower than those maintained by VR schedules with comparable rates of reinforcement, as Reynolds’s experiment involving yoked schedules of reinforcement showed.