Both cross-sectional and longitudinal studies have shown that advancing age is associated with a marked decrease in fluid intelligence starting in the third or fourth decade of life (Hartshorne & Germine, 2015; Schaie, 1994). (wellcomeopenresearch.org)
Their spines are arthritic and their arteries are becoming blocked with heart - attack causing plaques in their third or fourth decade of life. (southasianhealthsolution.org)
The ability of both Deveaus to take calculated risks continues to define the multinational company's culture in its fourth decade of operations. (canadianbusiness.com)