Answer:
variable-interval
Step-by-step explanation:
Types of reinforcement schedules:
1. Fixed-ratio schedule.
2. Fixed-interval schedule.
3. Variable-ratio schedule.
4. Variable-interval schedule.
Variable-interval schedule: The variable-interval schedule is a reinforcement schedule of operant conditioning. In this type of schedule, a response is being awarded when an incalculable time has been passed. It produces a steady and slow response rate.
In the question above, the given statement represents the variable-interval reinforcement schedule.