Question

a reinforcer is given to a subject every fifth time that a specific behavior is engaged. this is an example of? fixed interval variable interval fixed ratio variable ratio

Explanation:

To solve this, we analyze each option:

• Fixed Interval: Reinforcement based on time passage (e.g., every 5 minutes), not behavior count. Eliminate.
• Variable Interval: Reinforcement at unpredictable time intervals. Not related to behavior count. Eliminate.
• Fixed Ratio: Reinforcement after a fixed number of behaviors. Here, every 5th behavior (fixed count) gets a reinforcer. This matches.
• Variable Ratio: Reinforcement after a variable number of behaviors (unpredictable count). Eliminate.

Answer:

C. Fixed Ratio (assuming options are labeled A: Fixed Interval, B: Variable Interval, C: Fixed Ratio, D: Variable Ratio; if labels differ, adjust to the option with "Fixed Ratio" text)