In the context of ABA therapy, what is differential reinforcement of alternative behaviors (DRA)?

Differential reinforcement of alternative behaviors (DRA) is a strategy in ABA therapy that focuses on reinforcing a desirable behavior while not reinforcing an undesirable behavior. By doing this, the therapist encourages the individual to engage in a behavior that serves the same function as the undesirable behavior, but is more socially appropriate or acceptable.

In this context, teaching a child acceptable phrases to express disinterest represents DRA because it provides the child with a constructive way to communicate a feeling instead of resorting to maladaptive behaviors, such as withdrawal or interrupting. By reinforcing the use of these appropriate phrases, the therapist promotes healthier forms of expression, while steering the child away from less effective or problematic behaviors.

The other options do not embody the essence of DRA. Reinforcing behaviors that cannot coexist does not specifically pertain to an alternative behavior; it's not highlighting the reinforcement of an acceptable alternative to an undesirable behavior. Rewarding a child for doing homework correctly is more aligned with reinforcement for a specific task completion rather than addressing an alternative behavior. Providing tokens for sitting still in class can be viewed as reinforcing compliance but does not focus on reinforcing an alternative behavior to replace something inappropriate. Thus, the correct choice captures the core intent of DRA effectively.