Question

which type of behavior modification is used when a parent gives a time - out?
positive reinforcement
negative reinforcement
punishment

Explanation:

Positive reinforcement adds a pleasant stimulus to increase a behavior. Negative reinforcement removes an aversive stimulus to increase a behavior. Punishment involves adding an aversive stimulus (like time - out) to decrease a behavior. A time - out is a form of punishment as it is an aversive consequence aimed at reducing an unwanted behavior.

Answer:

Punishment