Abstract
The socioemotional selectivity theory (Carstensen et al., 1999) provides a new perspective on cognitive aging studies with an emotional-motivational basis, contributing to expanding studies in this area with new scopes. However, even though being the most important factor, a general method to measure the length of time perspective as a unified measure in different age groups is still not clear, making it difficult to contribute to the practice of cognitive aging research, and its extension to individual differences of every age groups. This study reports the results of a line test conducted in a questionnaire survey on hobbies and leisure activities among older adults and university students. In the presentation, an examination of the length of time perspective measured in the line test, as well as its relationship with the "willingness to engage in new hobbies and leisure activities in the future" as a motivation to activities will be reported.