15 human Ss received alternating sequences of 0- and variable 15-sec. delay of reinforcement on a FR 15 schedule lever-pulling task. Groups of 5 Ss received either rate instructions to maximize reinforcement or correct responses, or no instructions. Results indicate that delay of reinforcement reduced response rates only for Ss with rate instructions.
Rapid Assessment of Delay-of-Reinforcement Effects on Key Pecking Maintained by Fixed-Ratio Schedules
