Human Development
Human Development - Related Videos
01:29
Introduction to Human Development
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2026
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...
01:27
Domains of Human Development
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2026
Developmental scientists study human growth across three major domains: physical, cognitive, and psychosocial development. Although each domain describes a different aspect of development, they are closely connected. Changes in one domain can affect functioning in the other two, so human development reflects several interacting processes.Physical DevelopmentThe physical domain includes changes in the body and brain, sensory abilities, motor skills, and overall health. Physical conditions can...
01:30
Development of Human Microbiota
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2026
The human microbiota begins developing at birth and undergoes continual change as we age. Infancy marks a critical period of microbial sensitivity, offering a “window of opportunity” during which beneficial microbes help mature the immune system. By age three, children typically develop a more stable and diverse microbial community. Newborns acquire microbes from their immediate environment; vaginal delivery favors maternal vaginal microbes, while cesarean births favor microbes from the skin...
03:06
Developing a Humanized Mouse Model with Human Liver Cells and Immune Cells
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2025
This video demonstrates a method for generating a dual humanized mouse model with a human immune system and liver cells. It involves transplanting human liver cells and hematopoietic stem and progenitor cells into a transgenic immunodeficient mouse via intrasplenic injection, leading to engraftment of liver cells and development of human immune cells.
08:54
Development of a Multicellular Three-dimensional Organotypic Model of the Human Intestinal Mucosa Grown Under Microgravity
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Cited by 20 •
2016
Cells growing in a three-dimensional (3-D) environment represent a marked improvement over cell cultivation in 2-D environments (e.g., flasks or dishes). Here we describe the development of a multicellular 3-D organotypic model of the human intestinal mucosa cultured under microgravity provided by rotating-wall-vessel (RWV) bioreactors.
FAQs
Neither genetic maturation nor the environment operates in isolation. Brain development, learning, relationships, and surrounding conditions interact with biological changes to influence developmental pathways. This interaction helps explain why people can show different patterns of cognitive, emotional, social, or behavioral change, even while moving through broadly similar life periods.
Continuity highlights patterns that remain relatively consistent across time, whereas transition emphasizes meaningful changes between developmental periods. Considering both perspectives allows psychologists to examine how abilities, identity, attachment, and mental health may develop through gradual progression as well as through shifts associated with infancy, childhood, adolescence, and adulthood.
These domains should not be treated as separate tracks. Biological and brain development can occur alongside changes in learning, while emotional and social experiences may shape how abilities and identity emerge. Examining their connections gives psychology a broader account of behavior and well-being than focusing on any single developmental domain.
Knowledge of developmental change helps educators and parents interpret abilities, identity, attachment, and emotional or social development within a broader lifespan context. It can guide support that is responsive to developmental pathways and environmental conditions, rather than assuming that all people progress in the same way or require identical forms of assistance.
Clinical assessment can use developmental knowledge to place behavior and well-being in the context of biological maturation, learning, relationships, and life-stage transitions. Prevention programs likewise draw on this perspective to identify ways of supporting adaptive development before difficulties become more established, while recognizing that pathways differ across people and environments.
Interventions informed by human development can account for changes in abilities, identity, attachment, mental health, and social functioning across the lifespan. This perspective helps professionals connect support to a person’s developmental context and environmental conditions, with the broader aim of promoting adaptive development and well-being in varied life circumstances.