PSYCH 3400 Lecture Notes - Lecture 22: Secondary Sex Characteristic, Pubic Hair, Menarche
Document Summary
Secondary sexual characteristics: other body changes that come with puberty, such as breast development, pubic hair, and voice changes. Spermarche: first ejaculation, starts in boys on average at age 13, typically happens in secret (rather than a girl"s first period) Menarche: first period, starts in girls on average between the ages of 12 and 13. Girls who hit their period earlier than their peer group. They get involved in adult activities, such as smoking a drinking at a younger age. They are more likely to engage in intercourse at an early age, have unprotected sex, and are more vulnerable to teenage pregnancy. They are at risk for externalizing problem: externalizing problem: Taking their problems out on other people (yelling, throwing, etc. ) They tend to have poor body image and low self-esteem. They tend to perform poorly in school and are less likely to graduate from high school.
