Life-span development: refreshing a theoretical and practice perspective

Paul B. Baltes and colleagues described several key principles of lifespan development to explain how individuals change from childhood through late adulthood. These principles focus on the allocation of personal resources, the capacity for change, and the influence of historical and cultural environments. They show that development can change but is also limited by individual and environmental conditions.Development Involves Changing Resource AllocationsAcross the lifespan, individuals...

Paul B. Baltes and colleagues described several key principles of development across the lifespan. The first four emphasize that development is continuous and complex. It is shaped by experience, interacting influences, changing abilities, and the relationship between biology and culture. Together, these principles show why development is more complex than a simple sequence of age-related changes.Development is LifelongDevelopment begins early and continues throughout life, with experiences at...

Human development is the scientific study of change and continuity across the lifespan. It includes gains and losses in physical, cognitive, emotional, and social functioning. Learning to walk, use language, and solve problems are examples of positive change. Reduced muscle strength, slower reaction times, and sensory decline in later life are examples of negative change. Development is commonly divided into several stages across the lifespan.Prenatal Development and ChildhoodThe prenatal stage...

Sometimes we want to see how people change over time, as in studies of human development and lifespan. When we test the same group of individuals repeatedly over an extended period of time, we are conducting longitudinal research. Longitudinal research is a research design in which data-gathering is administered repeatedly over an extended period of time. For example, we may survey a group of individuals about their dietary habits at age 20, retest them a decade later at age 30, and then again...

A revisionist approach to Jean Piaget's theory of cognitive development has brought new insights that challenge and reinterpret his established ideas. Piaget proposed that the formal operational stage, emerging in adolescence, represents the culmination of cognitive maturity. During this stage, individuals are said to develop abstract thinking, engage in systematic problem-solving, and show a form of egocentrism, believing others are as preoccupied with their behavior as they are themselves.

Erik Erikson's theory of psychosocial development outlines a series of stages through which individuals progress across the lifespan. Each stage involves a psychosocial conflict that significantly influences personal growth and well-being. Three key stages — intimacy versus isolation, generativity versus stagnation, and integrity versus despair — highlight the developmental challenges faced in adulthood.
Intimacy Versus Isolation in Early Adulthood
Individuals in early adulthood, from the 20s...