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He called this process maturation, that is, the process by which development is governed by intrinsic factors, principally the genes. [ 6 ] According to Gesell, the rate at which children develop primarily depends on the growth of their nervous system, consisting of the complicated web of nerve fibers, spinal cord, and brain.
Development before birth, or prenatal development (from Latin natalis 'relating to birth') is the process in which a zygote, and later an embryo, and then a fetus develops during gestation. Prenatal development starts with fertilization and the formation of the zygote , the first stage in embryonic development which continues in fetal ...
An example is overbright smiling or laughing in the context of present danger or while experiencing pain. Victoria Climbié is considered a good case example. [2] [29] At age eight she was murdered by caregiver abuse and neglect. Her physical scars and other signs of abuse were seen by multiple professionals and agencies, including doctors ...
[18] [19] For non-human primates and all non-human mammalian species the growth of the first permanent molar marks the end of lactation and the beginning of foraging, setting an early requirement for independence. Human children, on the other hand, do not have an advanced motor control capable of foraging and also lack the digestive capacity ...
Developmental psychology examines the influences of nature and nurture on the process of human development, as well as processes of change in context across time. Many researchers are interested in the interactions among personal characteristics, the individual's behavior, and environmental factors , including the social context and the built ...
Complete diagram of a human spermatozoon Schematic of subcellular structures in a murine spermatid being formed showing the formation of the residual body and acrosomal cap. The process of spermiogenesis is traditionally divided into four stages: the Golgi phase, the cap phase, formation of the tail, and the maturation stage. [1]
Erikson's stages of psychosocial development, as articulated in the second half of the 20th century by Erik Erikson in collaboration with Joan Erikson, [1] is a comprehensive psychoanalytic theory that identifies a series of eight stages that a healthy developing individual should pass through from infancy to late adulthood.
Synaptic pruning, a phase in the development of the nervous system, is the process of synapse elimination that occurs between early childhood and the onset of puberty in many mammals, including humans. [1] Pruning starts near the time of birth and continues into the late-20s. [2]