Developmental Psychology: Middle and Older Adulthood

Ch 24: Middle and Older Adulthood

Theories of Aging

Several theories attempt to explain the biological and psychological processes of aging. These theories provide frameworks for understanding the changes that occur in middle and older adulthood.

• Genetic Theory: Proposes that aging is programmed by genes, determining the lifespan and rate of aging.

• Neuroendocrine and Immunity Theory: Suggests that aging results from changes in the neuroendocrine and immune systems, leading to decreased resistance to stress and disease.

• Stochastic Theories: Emphasize random events and environmental factors that cause cumulative damage to cells and tissues over time.

• Wear and Tear Theory: Argues that cells and organs wear out over time due to continued use and accumulated damage.

• Cross-Linkage Theory: Focuses on chemical reactions that create cross-links between proteins and DNA, impairing cell function and leading to cell death.

• Free Radical Theory: Attributes aging to damage caused by free radicals—unstable molecules formed during cellular metabolism that harm adjacent molecules.

Example: The free radical theory explains age-related diseases such as cancer and cardiovascular disease as consequences of accumulated cellular damage from free radicals.

Development of the Middle Adult

Middle adulthood is characterized by gradual changes in physical, cognitive, and psychosocial domains.

• Physiologic: Gradual internal and external changes, such as decreased skin elasticity and reduced muscle mass.

• Cognitive: Little change from young adulthood; motivation to learn may increase.

• Psychosocial: Increased personal freedom, economic stability, and social relationships are common.

Example: A middle adult may pursue new educational opportunities or hobbies due to increased motivation and stability.

Developmental Tasks of Middle Adulthood

Middle adulthood involves specific developmental tasks, as described by various theorists.

• Continue an established lifestyle or reorganize one’s life in a period of transition (Levinson).

• Assist children to become responsible adults.

• Adjust to aging parents.

• Maintain a satisfactory occupation.

• Relate to one’s spouse or partner as a person.

Example: A middle adult may help their children transition to college while also caring for aging parents.

Psychosocial Development in Middle Adulthood

Several theories address psychosocial development during middle adulthood:

• Erikson: Generativity versus stagnation—focus on contributing to society and helping the next generation.

• Havighurst: Emphasizes learned behaviors from maturation, motives, values, and civic responsibility.

• Levinson: Adults may continue or reorganize their lifestyle.

• Gould’s Theory:

  • Ages 35–43: Adults look inward.

  • Ages 43–50: Acceptance of lifespan boundaries; increased interest in relationships and community.

  • Ages 50–60: Increased self-satisfaction, concern for health, and valuing companionship.

Adjusting to Changes of Middle Adulthood

Middle adults must adapt to various life changes:

• Employment transitions

• Changes in spousal relationships

• Relationships with children and aging family members

Moral and Spiritual Development in Middle Adulthood

Moral and spiritual beliefs may evolve during middle adulthood.

• Kohlberg: Individuals may remain at the conventional level or progress to the post-conventional level of moral reasoning.

• Fowler: Adults may become less rigid in spiritual beliefs, recognize life’s paradoxes, and appreciate symbolism. The paradoxical-consolidative state involves mutual perspective-taking.

Common Health Problems in Middle Adulthood

Middle adults are at increased risk for several health conditions:

• Malignant neoplasms (cancers)

• Cardiovascular disease

• Injury

• Depression and suicide

• Diabetes mellitus

• Chronic lower respiratory disease

• Cerebrovascular causes

• Liver and/or kidney disease

• Obesity

• Alcoholism

• Arthritis

Key Point: Both acute and chronic illnesses are more likely to occur in middle adulthood, and recovery takes longer.

Role of the Nurse: Health of the Middle Adult

Nurses play a critical role in promoting health during middle adulthood:

• Encourage health-related screenings, examinations, and immunizations

• Educate about the dangers of substance use, smoking, and alcohol consumption

• Promote a diet low in fat and cholesterol

• Emphasize the importance of regular exercise

Variation in Life Expectancy—Older Adulthood

Life expectancy in older adulthood is influenced by multiple factors:

• Socioeconomic status and race/ethnicity

• Behavioral and metabolic risk factors

• Access to and quality of health care

Common Myths of Older Adults (Ageism)

Ageism involves stereotypes and misconceptions about older adults:

• Old age begins at 65 years

• Most older adults live in long-term care facilities

• Older adults are sick and mentally deteriorated

• Older adults are not interested in sex

• Older adults do not care about their appearance and are lonely

• Bladder problems are inevitable with aging

• Older adults do not deserve aggressive treatment for illnesses

• Older adults cannot learn new things

Key Point: Ageism is based on the belief that older people are fundamentally different from younger people and do not share the same desires, needs, or concerns.

Physiologic Changes of Older Adults

Aging affects all body systems, leading to various physiologic changes:

• General status: Decreased efficiency of body systems

• Integumentary: Thinner, less elastic skin

• Musculoskeletal: Decreased muscle mass and bone density

• Neurologic: Slower reflexes and reaction times

• Special senses: Decline in vision and hearing

• Cardiopulmonary: Reduced cardiac output and lung capacity

• Gastrointestinal: Slower digestion and absorption

• Dentition: Tooth loss and gum disease

• Genitourinary: Decreased kidney function and bladder control

Cognitive Development in Older Adulthood

Cognitive abilities in older adulthood show both stability and change:

• Intelligence may increase into the 60s; cognition remains relatively stable

• Response and reaction times may slow

• Mild short-term (recent) memory loss is common

• Long-term memory usually remains intact

• Dementia, Alzheimer’s disease, depression, and delirium can cause cognitive impairment

Key Point: Delirium is a temporary state of confusion that can last from hours to weeks and resolves with treatment; sundowning syndrome is not the same as delirium.

Psychosocial Development of the Older Adult

Older adulthood involves unique psychosocial challenges and tasks:

• Self-concept: Remains relatively stable

• Disengagement Theory: Older adults may substitute activities but do not fully disengage from society

• Erikson: Ego integrity versus despair and disgust; involves life review and acceptance

• Havighurst: Maintenance of social contacts and relationships is a major task

Adjusting to Changes of Older Adulthood

Older adults must adapt to several significant life changes:

• Declining physical strength and health

• Retirement and reduced income

• Changes in spouse or partner’s health

• Relating to one’s age group

• Shifting social roles

• Changes in living arrangements

• Family and role reversal (e.g., becoming dependent on children)

Moral and Spiritual Development of Older Adults

Moral and spiritual development continues in older adulthood:

• Kohlberg: Most older adults have completed moral development and are at the conventional level

• Fowler: Many are at the individuative–reflective level; some demonstrate conjunctive faith and trust in a greater power

• Self-transcendence: Characteristic of later life, involving a shift from materialistic to transcendent perspectives (gerotranscendence)

Health of the Older Adult

Older adults are generally not impaired but are more vulnerable to health problems:

• Increased probability of illness

• Chronic health problems or disability may develop

• Polypharmacy (use of multiple medications)

• Diversity and chronic illness: Structural racism can impact health outcomes

• Accidental injuries

• Dementia, delirium, and depression

• Elder abuse

Causes of Accidental Injuries in Older Adults

• Changes in vision and hearing

• Loss of muscle mass and strength

• Slower reflexes and reaction time

• Decreased sensory ability

• Combined effects of chronic illness and medications

• Economic factors

Elder Abuse

Elder abuse is a significant concern in older adulthood:

• Experienced by 1 in 10 community-dwelling older adults in the U.S.

• Risk factors include environmental, social, financial, educational, and employment-based inequities

• Rates increased during the COVID-19 pandemic

• Types: Physical, sexual, psychological/emotional, financial abuse or exploitation, and neglect

• Men have higher rates of death by homicide and nonfatal assaults compared to women

Assessment Tool: SPICES

SPICES is a tool used to assess common problems in older adults:

Letter	Assessment Area
S	Sleep disorders
P	Problems with eating or feeding
I	Incontinence
C	Confusion
E	Evidence of falls
S	Skin breakdown

Nursing Actions to Promote Health in Older Adults

Nurses can support older adults by addressing the following areas:

• Physiologic function

• Cognitive function

• Psychosocial needs

• Nutrition

• Sleep and rest

• Elimination

• Activity and exercise

• Sexuality

• Meeting developmental tasks

Additional info: The above content integrates developmental, cognitive, psychosocial, and health-related aspects of middle and older adulthood, as covered in developmental psychology and lifespan development courses.