PSY 203 Week 2 Lifespan Development Example

Three Generations Under One Roof: Applying Lifespan Development to a Family

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University of Phoenix

PSY/203: Foundations of Psychology

Week 2 Assignment

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[Date]

The family is a composite written for a model paper; theories and research come from the sources listed.

Development does not end when a person reaches adulthood. Psychologists study change from conception to death in three domains: physical, cognitive and psychosocial. This paper applies lifespan development to three members of one composite family in Tucson, Arizona, to show how theory explains everyday behavior at different ages.

A Lifespan View

Baltes (1987) proposed that development is lifelong, that every period of life mixes gains with losses, takes many directions and is shaped by history and context. A grandmother may lose processing speed while gaining expertise in managing people; a child may gain language while losing some of the flexibility of infancy. This lifespan view frames the analysis that follows, with one family member at each of three very different points in life.

The Preschooler: Early Childhood

Mia is four. Physically, she is gaining coordination: she can hop, pedal a tricycle and draw simple faces. Cognitively, she fits Piaget's preoperational stage. She plays elaborate pretend games, treating a box as a spaceship, which shows symbolic thinking. Yet when Rosa pours her juice from a squat mug into a slim glass, Mia insists the slim glass holds more. She has not yet mastered conservation, the grasp that pouring or reshaping something does not change how much of it there is. She also describes the world from her own point of view, a feature Piaget called egocentrism.

Psychosocially, Mia is in Erikson's stage of initiative versus guilt. She wants to plan and lead play and is easily hurt when scolded for trying.

Attachment After a Move

The family recently moved into the grandmother's house, and Mia has become clingy at bedtime. Ainsworth (1979) described how infants and young children use a caregiver as a secure base from which to explore and return to when distressed, and how the sensitivity of caregivers shapes the security of attachment. Mia's clinginess after a move is a normal response to disruption from a child who is securely attached; she seeks closeness while she adjusts. Consistent bedtime routines and reassurance help restore her sense of safety.

Learning With Help

Piaget emphasized what children discover on their own, but Vygotsky stressed what they learn with help. Rosa reads with Mia each evening and asks questions just beyond what Mia can answer alone, such as what might happen next in the story. This kind of support, offered within what Vygotsky called the zone of proximal development, lets Mia do with guidance what she cannot yet do independently. As Mia's skills grow, Rosa steps back, a process often described as scaffolding.

The Aunt: Emerging Adulthood

Danielle is twenty-two, studying part time and changing her major for the second time. Physically, she is at the peak of strength and health. Cognitively, she can think abstractly and weigh different points of view, a capacity that began in adolescence and continues to grow.

Arnett (2000) proposed that the stretch from roughly age eighteen into the middle twenties is a stage of its own, emerging adulthood, in industrialized societies. People in this stage explore identity in love, work and worldview, feel in between adolescence and adulthood and often delay marriage and settled careers. Danielle's changing majors fit this pattern of exploration rather than signaling failure. In Erikson's terms, she is also working on intimacy versus isolation as she considers a serious relationship.

Changing majors twice at twenty-two looks like indecision until it is read as the exploration that emerging adulthood is for.

The Grandmother: Late Adulthood

Rosa is sixty-eight and recently retired from teaching. Physically, she notices slower reaction times and stiffer joints. Cognitively, her processing speed has declined somewhat, but her vocabulary and knowledge, sometimes called crystallized intelligence, remain strong or have grown. She can still learn new skills, such as video calls with relatives.

Psychosocially, Rosa moves between Erikson's last two stages. Caring for Mia gives her a sense of generativity, contributing to the next generation. Retirement also prompts her to look back on her life, the task Erikson called integrity versus despair. Her pride in former students suggests she is moving toward integrity.

How Researchers Study Development

Developmental claims come from particular research designs. Cross-sectional studies test several age groups on a single occasion, which is quick but can confuse age with generation; today's sixty-eight-year-olds grew up with different schooling than today's twenty-two-year-olds. Longitudinal studies follow the same people over years, which shows real change but takes time and loses participants. Many findings about memory and aging, such as Rosa's slower processing speed alongside stable knowledge, come from combining both designs.

Heredity and Environment

Each family member's development reflects both genes and environment. Mia's temperament, partly inherited, affects how she reacts to change, but her family's responses shape how that temperament is expressed. Danielle's choices are influenced by economic conditions and family expectations. Rosa's health in later life reflects both genetic risk and decades of habits and access to care. Development is not nature or nurture; it is nature working through nurture, every day. The same genetic tendency toward anxiety, for example, may show up strongly in a chaotic home and barely at all in a calm one.

Supporting Each Member

For Mia, predictable routines and chances to lead play support security and initiative. For Danielle, conversations that treat exploration as normal, along with practical guidance about credits and costs, support identity work without pressure. For Rosa, staying physically active and socially engaged supports cognitive health, and her role with Mia gives meaning. The family also benefits from recognizing that each person's needs are shaped by their stage.

What the Family Learned

Talking about these ideas helped the family see each other differently. Rosa stopped worrying that Danielle was drifting, Danielle understood why Mia needed the same bedtime story every night and both noticed how much Rosa's patience came from decades of experience with children.

Conclusion

Applying lifespan theory to one household shows development as continuous, many-sided and shaped by context. Piaget explains Mia's thinking, attachment research explains her clinginess, Arnett explains Danielle's exploration and Erikson explains Rosa's search for meaning. Seeing all three stages together makes clear that every age brings both gains and challenges.

References

Ainsworth, M. D. S. (1979). Infant-mother attachment. American Psychologist, 34(10), 932-937. https://doi.org/10.1037/0003-066X.34.10.932

Arnett, J. J. (2000). Emerging adulthood: A theory of development from the late teens through the twenties. American Psychologist, 55(5), 469-480. https://doi.org/10.1037/0003-066X.55.5.469

Baltes, P. B. (1987). Theoretical propositions of life-span developmental psychology: On the dynamics between growth and decline. Developmental Psychology, 23(5), 611-626. https://doi.org/10.1037/0012-1649.23.5.611