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Physical development. Typically grows between 1 and 1.5 inches (2.5 and 3.8 cm) and gains about 2 pounds (910 g). [20] Motor development. Hands kept in tight fists. [21] Equal movement of arms and legs on both sides. [21] Able to briefly hold up head when in prone position. [21] Arm thrusts are jerky. [22] Brings hands close to eyes and mouth. [22]
Developmental drive is the inherent natural tendency of organisms and their ontogenetic trajectories to change in a particular direction (i.e. a bias towards a certain ontogenetic trajectory). [ 14 ] [ 5 ] [ 6 ] This type of bias is thought to facilitate adaptive evolution by aligning phenotypic variability with the direction of selection.
Development does not end at childhood, but instead extends through multiple life stages to influence life trajectory. [2] The origins of this approach can be traced back to pioneering studies of the 1920s such as William I. Thomas and Florian Znaniecki's The Polish Peasant in Europe and America and Karl Mannheim's essay on the "Problem of ...
Developmental change may occur as a result of genetically controlled processes, known as maturation, [4] or environmental factors and learning, but most commonly involves an interaction between the two. Development may also occur as a result of human nature and of human ability to learn from the environment.
In the case of a pathway or creode which is deeply carved in the hillside, external disturbance is unlikely to prevent normal development. He notes that creodes tend to have steeper sides earlier in development, when external disturbance rarely suffices to alter the developmental trajectory. [3]
Developmental psychology is the scientific study of how and why humans grow, change, and adapt across the course of their lives. Originally concerned with infants and children, the field has expanded to include adolescence, adult development, aging, and the entire lifespan. [1]
A predictive adaptive response (PAR) is a developmental trajectory taken by an organism during a period of developmental plasticity in response to perceived environmental cues. [1]
Developmental psychopathology is the study of the development of psychological disorders (e.g., psychopathy, autism, schizophrenia and depression) with a life course perspective. [1] Researchers who work from this perspective emphasize how psychopathology can be understood as normal development gone awry. [ 2 ]