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Life-span psychology can be defined as the exploration of biological, cognitive, and psychosocial changes and constancies that occur throughout the course of life. [6] It has been presented as a theoretical perspective, proposing several fundamental, theoretical, and methodological principles about the nature of human development.
So far, empirical research from a life course perspective has not resulted in the development of a formal theory. [8] Glen Elder theorized the life course as based on five key principles: life-span development, human agency, historical time and geographic place, timing of decisions, and linked lives. As a concept, a life course is defined as "a ...
Erik Erikson and Carl Jung proposed stage theories [2] [3] of human development that encompass the entire life span, and emphasized the potential for positive change very late in life. The concept of adulthood has legal and socio-cultural definitions. The legal definition [4] of an adult is a person who is fully grown or developed.
Originally concerned with infants and children, the field has expanded to include adolescence, adult development, aging, and the entire lifespan. [1] Developmental psychologists aim to explain how thinking , feeling , and behaviors change throughout life.
The development of the human mind is complex and a debated subject, and may take place in a continuous or discontinuous fashion. [4] Continuous development, like the height of a child, is measurable and quantitative, while discontinuous development is qualitative, like hair or skin color, where those traits fall only under a few specific phenotypes. [5]
The lifespan perspectives of personality are based on the plasticity principle, the principle that personality traits are open systems that can be influenced by the environment at any age. [5] Large-scale longitudinal studies have demonstrated that the most active period of personality development appears to be between the ages of 20–40. [5]
Ecological systems theory is a broad term used to capture the theoretical contributions of developmental psychologist Urie Bronfenbrenner. [1] Bronfenbrenner developed the foundations of the theory throughout his career, [2] published a major statement of the theory in American Psychologist, [3] articulated it in a series of propositions and hypotheses in his most cited book, The Ecology of ...
The constructive developmental framework (CDF) is a theoretical framework for epistemological and psychological assessment of adults. The framework is based on empirical developmental research showing that an individual's perception of reality is an actively constructed "world of their own", unique to them and which they continue to develop over their lifespan.