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The Nature of Adolescence

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Title: PowerPoint Presentation for chapter 12 Subject: Santrock, 10e Author: ANN BUTZIN Last modified by: 240Ghost Created Date: 6/4/2004 6:44:27 PM – PowerPoint PPT presentation

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Title: The Nature of Adolescence


1
  • The Nature of Adolescence

2
Fact or Fiction?
  • pubescent comes from the Latin word meaning,
    to grow hairy
  • Puberty Starts at One Point in Time
  • Puberty Strikes Without Warning
  • Puberty is the Result of Raging Hormones

3
  • What physical changes occur in adolescence?
  • Pubertal with rapid physical changes involving
    hormones
  • Menarche is a girls first menstruation
  • Puberty is also triggered by body mass
  • Genetic factors are involved in puberty
  • Puberty involves the interaction of the
    hypothalamus, pituitary gland, and gonads
  • The onset of puberty varies among individuals

4
Median Ages at Menarche in Selected Northern
European Countries and the United States from
1845 to 1969
Fig. 12.1
5
  • Most noticeable physical changes include
  • Pubic hair growth
  • Facial and chest hair growth in males
  • Breast growth in females
  • Increased height and weight
  • Sexual maturity
  • Adolescent sexuality is initiated by
  • First ejaculation, voice change, penis
    elongation, and testes development in males
  • Highly irregular menstrual cycles, rounding of
    breasts, and widening of hips in females

6
  • Early onset of puberty can create risks for
    females
  • Depression
  • Eating disorders
  • Use of alcohol, drugs, and/or tobacco
  • Earlier dating and sexual involvement with males
  • Possible lower educational attainment
  • Pubertal changes have a strong effect on the
    adolescents body image, dating interest, and
    sexual behavior

7
Normal Range and Average Development of Sexual
Characteristics in Males and Females
Males
Females
Onset (average)
Completion (average)
Age (years)
Fig. 12.4
8
  • Adolescent sexuality- exploration,
    experimentation, and sexual fantasies
  • Adolescence is a bridge between the asexual child
    and sexual adulthood reaction of each society
    may vary
  • Television and other media contribute to the
    sexual culture
  • Developing a sexual identity involves
  • Sexual behavior
  • Indication of sexual orientation

9
Sexuality and Adolescence
10
Body Image
11
Early- and Late-Maturing Adolescent Girls
Perceptions of Body Image in Early and Late
Adolescence
Early development
Late development
Fig. 12.5
12
  • Percentages of sexually active young adolescents
    in the United States vary greatly
  • Male, African American, and inner-city
    adolescents report being the most sexually active
  • Early sexual activity is linked to other risky
    behaviors and to contracting STIs
  • Adolescents are increasing their use of
    contraceptives
  • Cross-culturally, the United States still has one
    of the highest adolescent pregnancy and birth
    rates

13
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14
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15
Cross-Cultural Comparisons of Adolescent
Pregnancy Rates
Fig. 12.6
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