DTT uses which type of reinforcement to increase the frequency of correct responses?

The correct answer is rooted in the principles of applied behavior analysis (ABA), particularly in the context of Discrete Trial Training (DTT). DTT primarily utilizes positive reinforcement to increase the frequency of correct responses.

Positive reinforcement involves presenting a motivating item or reward after a desired behavior occurs, which increases the likelihood that the behavior will be repeated in the future. In DTT, when a learner responds correctly to a prompt or question, they are typically rewarded with praise, tokens, or other reinforcers that are meaningful to them. This positive loop of desired behaviors leading to positive outcomes creates an environment conducive to learning and retention.

The other options involve negative reinforcement and imply a decrease in some aspect, which does not align with the goal of DTT. Negative reinforcement focuses on the removal of an aversive stimulus to increase behavior, which is not the primary focus in DTT. The aim is to establish positive behaviors through encouragement and rewards, setting it apart from strategies that would decrease or eliminate stimuli. Thus, positive reinforcement is the key mechanism for increasing correct responding within this training methodology.