Chronological age, or how many years old you are, is just one way to think about aging. You can also consider: Biological age - how healthy you are; Social age - the habits you have and the roles that you take on; and Psychological age - how well you reason and think.
A recent study highlights how people's perceptions of their Biological and Social ages can influence their Subjective ages - or how old they feel. Stephan, Demulier, and Terracciano (2012) asked more than 1,000 French adults ages 18-91 to rate their physical health, to complete a version of the Big Five personality inventory, and to report their subjective ages.
The results support the idea that how old we feel is based on more than how old we are. These effects varied depending on the ages of the participants. The authors did not state the ranges of the age groups, but we would usually assume that their young adults were ages 18-39, middle-aged adults were 40-59, and older adults were 60-91.
A strong relationship between chronological age, health, and subjective age emerged. Middle aged and older adult participants who rated themselves as being in good health were more likely to say that they felt younger than they actually were. Stephan et al. clarify that on average, these middle aged adults felt 2 years younger and these older adults felt four years younger. These results support the importance of considering a person's Biological age.
When the authors controlled for health and demographic factors a relationship between chronological age, certain Big Five traits, and subjective age appeared. Because our personality traits often relate to our behaviors and activities, these results support the importance of assessing a person's Social age. For example, young adults who were high in Conscientiousness felt older than they really were. Conscientiousness implies being responsible and organized. Motivated and reliable young adults might feel like they are older than their peers because these are not characteristics that Western culture often associates with that age.
Middle aged and older adults who were high in Openness to Experience, and older adults who were high in Extraversion felt younger than they were. Openness to Experience has to do with engaging in diverse interests and being open to new ideas; Extraversion is associated with being out-going and dynamic. Both are traits that Western culture does not associate with middle and older age, so people with these traits are likely to feel younger than they really are as they age.
These results explain the experience that Yoko Ono and I share. When I was a young adult, my conscientious behavior did not match with my stereotype about my age: so I felt older. Now as a middle aged person who has broad interests and loves creativity, my self-perception again runs contrary to the stereotype about my age: so I feel younger. In some decades, I can predict that I will continue to feel younger because I am relatively high in Extraversion.
This research also raises a question about Western stereotypes about age. What does it mean that we view young adults as irresponsible, middle-agers and seniors as stuck in their ways, and senior citizens as being unsociable? If we can imagine a time that these negative assumptions are no longer part of our culture, it would have implications for subjective age. Instead of feeling older or younger than our chronological age we would simply be that old and recognize that at all ages individuals can differ on Big Five traits.
Further Reading:
A pre-publication version of the Stephan et al. (2012) article can be read here thanks to the National Institute of Health. The Psychology and Aging article can be accessed through your local college library.
A blog post from the AARP about research done by Rippon and Steptoe (2015): "Feeling Old vs Being Old." More support for Biological age!
Know an Extraverted senior? The social networking site Meet Up has groups around the world for outgoing older people who want to socialize!
