Belke and Pierce (2015) Failed to Replicate Previously Observed Behavioral

Multiple Choice

Belke and Pierce (2015) failed to replicate previously observed behavioral contrast effects with rats when they used wheel running and lever pressing as available responses. What explanation did they provide for this?

A) Automatic reinforcement for lever pressing interfered with contrast
B) Automatic reinforcement for wheel running interfered with contrast
C) Behavioral contrast only occurs when the responses have the same topography
D) Behavioral contrast only occurs when the reinforcers are the same