Final answer:
The least effective method for changing behavior consistently is to ignore the behavior, hoping it will change by itself. Active interventions, setting goals, and consistent reinforcement are necessary for effective behavioral change. Approaches like the behavioral intervention technique that gradually approximate desired behaviors are significantly more effective.
Step-by-step explanation:
The least effective method for changing behavior consistently is to simply ignore the behavior with the expectation that it will change on its own. Without a proper commitment from the individual to change their thinking and behaviors, expecting consistent and meaningful behavioral change is impractical. Behavioral change usually requires active strategies and interventions such as reinforcement, setting clear goals, and consistently applying efforts toward those goals.
Furthermore, certain behavioral methods such as relying on abstinence or the withdrawal method for contraception are among the least effective because they require high levels of self-control and consistency that are difficult to maintain. They are also less effective in cases of non-consensual sex. In contrast, evidence-based behavioral recommendations for weight loss, which include self-monitoring, nutrition education, physical activity goals, and behavior modification, show that active engagement in a planned intervention is much more effective in producing and maintaining consistent behavior change.
Applying the principles of behavioral intervention techniques can significantly increase the effectiveness of behavior change. For instance, using graduated steps to reinforce behavior--starting with reinforcing any response that resembles the desired behavior, and then reinforcing responses progressively closer to the desired behavior until only reinforcing the desired behavior itself--is one method to shape behavior over time effectively. This approach is in stark contrast to expecting change through inaction or inconsistent application of reinforcement.