Question

carson goes door to door selling justin beiber cds. what partial reinforcement schedule is he operating on?
variable - ratio
fixed - ratio
no answer text provided.
variable - interval
fixed - interval

Explanation:

In a variable - ratio schedule, reinforcement is delivered after an unpredictable number of responses. Door - to - door selling is unpredictable. A seller (like Carson) doesn't know after how many doors (responses) they will make a sale (reinforcement). In a fixed - ratio schedule, reinforcement is after a fixed number of responses (e.g., every 5th sale). In a fixed - interval, it's after a fixed time. In a variable - interval, after an unpredictable time. Since door - to - door selling's reinforcement (sale) is based on an unpredictable number of attempts (doors), it fits variable - ratio.

Answer:

Variable - ratio