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  1. Human development | Description, Rate, Growth, & Puberty

    Human development, the process of growth and change that takes place between birth and maturity. The growth and development of a child consists of a highly complex series of …

  2. Human development - Hormones, Growth, Puberty | Britannica

    Human development - Hormones, Growth, Puberty: The main hormones concerned with growth are pituitary growth hormone, thyroid hormone, the sex hormones testosterone and estrogen, …

  3. Psychological development | Definition, Stages, Examples, & Facts ...

    Oct 15, 2025 · Psychological development, the development of human beings’ cognitive, emotional, intellectual, and social capabilities and functioning over the course of a normal life …

  4. Prenatal development | Description, Stages, & Timeline | Britannica

    Prenatal development, the process encompassing the period from the formation of an embryo, through the development of a fetus, to birth. This process can be divided into three distinct …

  5. Human behaviour - Cognitive Development, Piaget's Theory

    Human development during the 38 weeks from conception to birth is divided into three phases. The first, the germinal period, lasts from the moment of conception until the time the fertilized …

  6. Human development - Growth Data, Measurement, Trends

    Many attempts have been made at finding mathematical curves that fit, and thus summarize, human growth data. What is needed is a curve or curves with relatively few constants, each …

  7. Child development | Definition, Stages, & Facts | Britannica

    Oct 22, 2025 · Child development, the growth of perceptual, emotional, intellectual, and behavioral capabilities and functioning during childhood. The term childhood denotes that …

  8. Infancy | Definition, Characteristics, Stages, & Facts | Britannica

    Oct 15, 2025 · The physical growth of children is treated in human development. The end of infancy and the onset of childhood are marked by the emergence of speech at one to two …

  9. Adolescence | Definition, Characteristics, & Stages | Britannica

    Oct 24, 2025 · Many changes take place during adolescence. Prominent among these are physical changes, including puberty, and social and psychological changes, with development …

  10. Biological development | Definition, Stages, Examples, Theory,

    Biological development, the progressive changes in size, shape, and function during the life of an organism by which its genetic potentials (genotype) are translated into functioning mature …