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What Is Developmental Psychology
Ken Tangen
Overview
Developmental psychology is the study of how people change throughout their lifespan. This field examines not only the acquisition of new skills and abilities but also the declines and losses that occur with age, such as physical weakening and the onset of diseases. Development varies in speed, with different bodily systems changing on distinct schedules. Researchers often specialize in either a specific developmental process (like cognition or language) or a particular age period (like childhood or old age) due to the complexity and breadth of the subject. This interdisciplinary field draws on genetics, biology, neurology, and other sciences, employing both controlled experiments and observational methods like correlational studies and ethnographies to understand human change within biological, environmental, and social contexts. The video also introduces a website, DevelopmentalDave.com, for audience participation in creating a fictional character's developmental journey.
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Chapters
- •Developmental psychology studies how people change over time.
- •Lifespan development encompasses all changes from birth to death.
- •Humans are not fully formed at birth; development involves acquiring skills and operational abilities.
- •Development includes both positive changes (skill acquisition) and negative changes (physical decline, disease).
- •Development can involve physical deterioration, such as weakening bones and declining senses.
- •Age-related conditions like osteoporosis, heart disease, and Alzheimer's are part of development.
- •Developmental changes occur at varying rates, from daily hair growth to monthly skin cell replacement.
- •Different biological systems have their own unique developmental timelines.
- •Due to complexity, researchers often focus on specific topics or age periods.
- •Topical specialization involves studying a single process (e.g., cognition, language) across the lifespan.
- •Temporal specialization focuses on a particular age group, such as children or the elderly.
- •Advances in technology, like brain imaging, influence research focus, particularly on rapid growth periods.
- •Developmental psychology is highly interdisciplinary, integrating genetics, biology, neurology, and more.
- •Controlled experiments in laboratory settings are preferred, using random assignment and control groups.
- •Ethical considerations prevent random assignment in some human studies, necessitating correlational studies, surveys, and naturalistic observations.
- •Diverse methodologies are used to understand complex human development.
- •Human development is influenced by biological, environmental, and social contexts.
- •These contexts shape decisions and experiences, and are in turn affected by individual behaviors.
- •A fictional character, 'Developmental Dave', is being created to illustrate lifespan changes.
- •The public is invited to contribute to the character's developmental challenges via DevelopmentalDave.com.
Key Takeaways
- 1Developmental psychology is the scientific study of human change across the entire lifespan.
- 2Development encompasses both growth and decline, including physical, cognitive, and social aspects.
- 3The pace and nature of development vary significantly across individuals and different biological systems.
- 4Researchers often specialize in specific developmental topics or age groups due to the field's vast scope.
- 5Developmental psychology is an interdisciplinary field that draws from multiple scientific domains.
- 6Both controlled experiments and observational methods are employed to study human development.
- 7Biological, environmental, and social contexts play crucial roles in shaping individual development.
- 8Understanding development requires considering the complex interplay between the individual and their surroundings.