What is regression in psychological terms?

In psychological terms, regression refers to a behavioral response where an individual retreats to an earlier stage of development, often in reaction to stress or anxiety. This might manifest as childish behavior or the use of coping mechanisms that were more prominent in earlier life stages.

For instance, an adult facing significant stress might exhibit behaviors they showed during childhood, such as throwing tantrums, bedwetting, or seeking excessive comfort from caregivers. This process serves as a defense mechanism, allowing individuals to avoid coping with their current challenges by reverting to simpler and often more manageable ways of thinking and behaving.

The other concepts provided do not accurately encapsulate the definition of regression. Adapting to new environments reflects positive coping strategies rather than a retreat to earlier behavior. Increased psychological resilience indicates growth and strength in facing challenges, contrasting with the idea of regression. Lastly, advancement to a higher level of functioning suggests progress and personal development, which is the opposite of returning to a less advanced condition. Therefore, regression fundamentally illustrates a reversal in behavioral maturity, accurately described by the correct answer.