Which of the following defense mechanisms is characterized by a return to earlier, less mature behavior?

The mechanism characterized by a return to earlier, less mature behavior is regression. This psychological defense mechanism occurs when an individual reverts to behaviors typical of an earlier developmental stage in response to stress or anxiety. For example, an adult might exhibit childlike behaviors such as temper tantrums or clinging when facing overwhelming situations. Regression allows the individual to escape the pressures of more adult responsibilities and emphasizes the developmental nature of psychological functioning.

Understanding this concept highlights how stressors can cause individuals to seek comfort in previously established behaviors, showcasing a natural response to emotional turmoil.