Feeling younger than one really is only makes one happier up to a certain threshold: Among 40-year old adults the greatest life satisfaction was reported when they felt about 18 years old

Blöchl, Maria, Steffen Nestler, and David Weiss. 2020. “A Limit of the Subjective Age Bias: Feeling Younger to a Certain Degree, but No More, Is Beneficial for Life Satisfaction.” PsyArXiv. January 22. doi:10.31234/osf.io/pfxqh

Abstract: The majority of adults feels considerably younger than their chronological age. Numerous studies suggest that maintaining a younger subjective age is linked to greater life satisfaction. However, whether there is a limit beyond which feeling younger becomes detrimental is not well understood. Here, we use response surface analysis to examine the relationships between subjective age, chronological age, and life satisfaction in in a large sample spanning adulthood (N= 7,356; 36 –89 years). We find that there is a limit to feeling younger: People who feel younger by a certain amount, but not more, have the highest levels of life satisfaction. In addition, our findings suggest that the discrepancy between subjective and chronological age at which life satisfaction is highest increases across the adult age span. Taken together, these findings reveal that beyond a certain point, feeling younger than one’s chronological age may be psychologically harmful.