A Pigeon in Operant Chamber #1 Regularly Receives a Pellet

Multiple Choice

A pigeon in operant chamber #1 regularly receives a pellet of food after every 10 pecks at a red disk, no matter how long it takes. A rat in operant chamber #2 regularly receives a pellet of food for the first bar press it makes after 10 minutes have passed, no matter how many bar presses it makes. The pigeon is on a _____ schedule of reinforcement, and the rat is on a _____ schedule of reinforcement.

A) fixed-ratio; fixed-interval
B) fixed-interval; fixed-ratio
C) fixed-ratio; variable-interval
D) fixed-ratio; variable-ratio