Board Certified Behavior Analyst (BCBA) Practice Test 2026 - Free BCBA Practice Questions and Study Guide

Reinforcement in behavior modification is essential for increasing the likelihood of a desired behavior occurring again in the future. The correct choice highlights that reinforcement can involve both adding stimuli, known as positive reinforcement, and removing stimuli, which is referred to as negative reinforcement.

Positive reinforcement occurs when a pleasant stimulus is presented following a desired behavior, thus strengthening that behavior. For example, a child may receive praise or a treat after completing their homework, making them more likely to do their homework in the future. Conversely, negative reinforcement involves the removal of an unpleasant stimulus in response to a desired behavior, which also increases the likelihood of that behavior being repeated. For instance, a student who studies to avoid poor grades experiences negative reinforcement.

Understanding that both adding and subtracting stimuli are critical to how reinforcement works clarifies its role in behavior modification. This dual approach allows for a more versatile application of reinforcers based on individual behavior and circumstances.

The other options do not accurately represent the concept of reinforcement. Specifically, stating that reinforcement can only be positive ignores the critical role of negative reinforcement. Claiming that reinforcement must be random fails to recognize the importance of timing and consistency in effectively applying reinforcement strategies. Asserting that reinforcement only supports complex behaviors overlooks its applicability in promoting