CHYS 2P10 Lecture Notes - Lecture 8: In Essence, Takers, Libido
18 Apr 2013
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Defining sex and gender (the two are typically strongly correlated) Sex: a person"s biological identity; chromosomes, physical identity, and hormones. Gender: a person"s social and cultural identity; the expression of your biological sex. In 1860, women typically began menstruation between the ages of 15 and 16. But in 1980, the average age is approaching 11. Thus, the age of first menstruation is declining as time progresses. Increased health and nutrition appear to be the largest contributors to trend for puberty to begin at lower ages. Menstruation can be halted if there aren"t enough energy reserves (athletes or extreme diets) Menarche delayed by low levels of nutrition (as is menstruation) Adult height permanently stunted by poor nutrition. Aspects of rearing environment can affect the reproductive strategy of girls. The rate of pubertal maturation in girls is affected by: Father absence and relationship quality with father. See figure 4. 8 two developmental pathways of reproductive strategies.
