Shaping Procedure Reinforcing behaviors that are closer to the target behavior, also known as successive approximations. At first, any approximation of the skill is reinforced. Example – writing the letter A This attempt is reinforced and set as the best approximation of writing the letter A. Later on we are able to get them closer to writing the letter A This behavior is closer to a letter A than the previous attempt, so this behavior receives a bigger reinforcer than the previous approximation. If the learner attempts to go back to previous approximation, they will not receive reinforcement. No reinforcement since it is not the patient’s best approximation. After continued work on the skill, the patient is able to write the letter A correctly. Only behavior that will receive reinforcement now This behavior would now be considered mastered (assuming they are able to perform at this level consistently) so now only correctly writing the letter A will receive reinforcement. With each successive approximation getting closer to the end goal, the reinforcement will continue to increase along with the approximations. Always saving the biggest reinforcer for engaging in the desired end goal.