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If you look at the way America's 55-year-old leaders were acting in the 1960s -- you know, the ebullience and confidence of the JFKs and LBJs and Hubert Humphreys -- and compare them with today's leaders in Congress -- the indecision, the lack of sure-footedness -- I think you would have to agree that 55-year-olds do not always act the same way ...
The classical theories of evolution (mutation accumulation, antagonistic pleiotropy, and disposable soma) [1] [2] [3] suggest that environmental factors, such as predation, accidents, disease, and/or starvation, ensure that most organisms living in natural settings will not live until old age, and so there will be very little pressure to ...
A 26-year-old's viral video about Gen Z "aging like milk" spawned a thousand think pieces. However, one expert argues that physical aging shouldn't be this generation's main concern.
Don’t let the “old men making love is weird” or “old people making love is a myth” comments bother you — they’re nonsense. However, research suggests that most men stop making love ...
Enlarged ears and noses of old humans are sometimes blamed on continual cartilage growth, but the cause is more probably gravity. [23] Age dynamics of the body mass (1, 2) and mass normalized to height (3, 4) of men (1, 3) and women (2, 4) [24] Comparison of a normal aged brain (left) and a brain affected by Alzheimer's disease
By analyzing the heights of 49,180 men and women between the ages of 23 and 26 from several UK studies published between 1905 and 1958, they found that women’s average height increased by 0.25 ...
In heterosexual sexual relationships, concepts of age disparity, including what defines an age disparity, have developed over time and vary among societies.Differences in age preferences for mates can stem from partner availability, gender roles, and evolutionary mating strategies, and age preferences in sexual partners may vary cross-culturally.
The specific problem is: It is not clear exactly how big of a deal this idea is in anthropology, whether it really is a counterpart to economy-of-effort theory and compatibility with childcare, and an expert would probably be able to identify some sources (or have an old undergraduate textbook on hand) to provide solid grounding.