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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]
A common concern in child development is delayed development of age-specific developmental milestones. Preventing, and intervening early, in developmental delays is a significant topic in the study of child development.
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 ...
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 ...
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]
This theory is used with respect to antisocial behavior instead of crime due to the differing definitions of 'crime' among cultures. Due to similar characteristics and trajectories, this theory can be applied to both females and males. [4]
The model of hierarchical complexity is a quantitative analytic theory of development. This model offers an explanation for why certain tasks are acquired earlier than others through developmental sequences and gives an explanation of the biological, cultural, organizational, and individual principles of performance. [17]