1. Special Update For DSM-5
Don H. Hockenbury and Sandra E. Hockenbury
Psychology
Sixth Edition
Special Update For DSM-5
Chapter 9
Lifespan Development
Copyright © 2014 by Worth Publishers

2. Table 9.1 Major Stages of the Lifespan
Don H. Hockenbury and Sandra E. Hockenbury: Psychology, Sixth Edition – Special Update For DSM-5 Copyright © 2014 by Worth Publishers

3. Figure 9.1 Chromosomes, Genes, and DNA
Each chromosome contains thousands of genes, and each gene is a unit of DNA instructions. Incredibly fine, the strands of DNA in a single human cell would be more than three inches long if unraveled. If the DNA present in one person were unraveled, it would stretch from Earth to Pluto and back—twice!
Figure 9.1 Chromosomes, Genes, and DNA
Don H. Hockenbury and Sandra E. Hockenbury: Psychology, Sixth Edition – Special Update For DSM-5 Copyright © 2014 by Worth Publishers

4. Figure 9.2 The Sequence of Fetal Brain Development
The human brain begins as a fluid-filled neural tube at about three weeks after conception. The hindbrain structures are the first to develop, followed by midbrain structures. The forebrain structures develop last, eventually coming to surround and envelop the hindbrain and midbrain structures.
Figure 9.2 The Sequence of Fetal Brain Development
Don H. Hockenbury and Sandra E. Hockenbury: Psychology, Sixth Edition – Special Update For DSM-5 Copyright © 2014 by Worth Publishers

5. Figure 9.3 Milestones in Infant Motor Development
Each bar in the graph shows the typical range of ages for acquiring a particular motor skill during infancy. Given the wide range of individual variation, can you see how simple statistical averages may be misleading?
Figure 9.3 Milestones in Infant Motor Development
Don H. Hockenbury and Sandra E. Hockenbury: Psychology, Sixth Edition – Special Update For DSM-5 Copyright © 2014 by Worth Publishers

6. Figure 9.4 Milestones in Language Comprehension and Production
Approximate average age ranges for the first appearance of different stages of language development are shown here. Notice that language comprehension occurs much earlier than language production.
Figure 9.4 Milestones in Language Comprehension and Production
Don H. Hockenbury and Sandra E. Hockenbury: Psychology, Sixth Edition – Special Update For DSM-5 Copyright © 2014 by Worth Publishers

7. Table 9.2 Piaget’s Stages of Cognitive Development
Don H. Hockenbury and Sandra E. Hockenbury: Psychology, Sixth Edition – Special Update For DSM-5 Copyright © 2014 by Worth Publishers

8. Figure 9.5 Testing Object Permanence in Babies
How can you test object permanence in infants who are too young to reach for a hidden object? Three-and-a-half-month-old infants initially watched a possible event: The short carrot passes from one side of the panel to the other without appearing in the window. In the impossible event, the tall carrot does the same. Because the infants are surprised and look longer at the impossible event, Baillargeon and DeVos (1991) concluded that the infants had formed a mental representation of the existence, height, and path of each carrot as it moved behind the panel—the essence of object permanence (Baillargeon, 2004).
Figure 9.5 Testing Object Permanence in Babies
Don H. Hockenbury and Sandra E. Hockenbury: Psychology, Sixth Edition – Special Update For DSM-5 Copyright © 2014 by Worth Publishers

9. Table 9.3 The Typical Sequence of Puberty
Don H. Hockenbury and Sandra E. Hockenbury: Psychology, Sixth Edition – Special Update For DSM-5 Copyright © 2014 by Worth Publishers

10. Table 9.4 Erik Erikson’s Psychosocial Stages of Development
Don H. Hockenbury and Sandra E. Hockenbury: Psychology, Sixth Edition – Special Update For DSM-5 Copyright © 2014 by Worth Publishers

11. Table 9.5 Kohlberg’s Levels and Stages of Moral Development
Don H. Hockenbury and Sandra E. Hockenbury: Psychology, Sixth Edition – Special Update For DSM-5 Copyright © 2014 by Worth Publishers

12. Figure 9.6 The Median Age at First Marriage
The average age at first marriage is five years older for young adults today than it was in the 1970s. Part of the explanation for this trend is that more people are postponing marriage in order to complete a college education. Among young adults in the 25 to 34 age range, 26 percent of men and 33 percent of women have earned a bachelor’s degree or higher.
Figure 9.6 The Median Age at First Marriage
Don H. Hockenbury and Sandra E. Hockenbury: Psychology, Sixth Edition – Special Update For DSM-5 Copyright © 2014 by Worth Publishers

13. Figure 9.7 The Changing Structure of American Families and Households
In a relatively short time, American households have undergone a metamorphosis. Between 1970 and 2007, the number of American households increased from 63 million to 116 million, but the average household size decreased from 3.14 to 2.56 persons. As the living arrangements of American families have become more diversified, the U.S. Census Bureau modified the categories it uses to classify households. Hence, the two pie charts differ slightly. Notice that single-parent family groups have doubled. Today, single mothers or fathers represent 9 percent of all households. In contrast, the number of married couples with children has sharply decreased.
Figure 9.7 The Changing Structure of American Families and Households
Don H. Hockenbury and Sandra E. Hockenbury: Psychology, Sixth Edition – Special Update For DSM-5 Copyright © 2014 by Worth Publishers

14. Photo Credits Slide 5: Bubbles Photolibrary / Alamy
Image Source/Getty Images
Brand X Pictures / Punchstock
Katie Moss/jupiterimages
JUPITERIMAGES/ BananaStock / Alamy