At the beginning of the semester, the humanities instructor explains that there will be ten pop quizzes over the semester, so students are strongly encouraged to keep up with their reading and attend every class. The humanities instructor is most likely using a _____ schedule of reinforcement to encourage studying and class attendance.
A)variable-ratio
B)fixed-interval
C)fixed-ratio
D)variable-interval

Question

Quizplus · Accepted Answer

The instructor is using a variable-interval schedule of reinforcement, where the reinforcement (pop quizzes) is given at unpredictable time intervals. This encourages continuous studying and attendance since students cannot predict when the next quiz will occur.

At the Beginning of the Semester, the Humanities Instructor Explains