Why is there little knowledge or research concerning the age group termed "late adulthood"?

Question

Quizplus · Accepted Answer

The lack of knowledge or research on the age group termed "late adulthood" is due to a combination of factors. Firstly, the group is relatively recent since people are living longer due to advancements in medicine and healthcare. Secondly, data specifically compiled on this age group has not been available until a few decades ago, and even then, the sample sizes may not have been large enough to draw valid conclusions. Finally, census bureau reporting may not have been adequate in capturing the needs and characteristics of this age group.

Why Is There Little Knowledge or Research Concerning the Age