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The Maturational Theory of child development was introduced in 1925 [1] by Dr. Arnold Gesell, an American educator, pediatrician and clinical psychologist whose studies focused on "the course, the pattern and the rate of maturational growth in normal and exceptional children"(Gesell 1928). [2]
Arnold Lucius Gesell (21 June 1880 – 29 May 1961) was an American psychologist, pediatrician and professor at Yale University known for his research and contributions to the fields of child hygiene and child development.
The Gesell Developmental Schedules claimed that an appraisal of the developmental status of infants and young children could be made. The Gesell Developmental Schedule believes that human development unfolds in stages, or in sequences over a given time period. These stages were considered milestones, or the manifestations of mental development. [1]
Maturationism is an early childhood educational philosophy that sees the child as a growing organism and believes that the role of education is to passively support this growth rather than actively fill the child with information. This theory suggests that growth and development unfold from within the organism. [1]
Edelman, in his theory of neuronal development, showed that development occurs in the brain between neuro-networks that overlap and interconnect. The epigenetic process of neural development is grounded in the idea of experience-dependent changes which is development or growth by selectively and simultaneously reinforcing neural pathways. [ 9 ]
Researchers compared how three antioxidants affected gray hair outcomes in mice: hesperetin, diosmetin, and luteolin, and found that one helped mitigate hair graying.
[12] [13] Piaget's theory of cognitive development defines the formal operational stage as a plateau reached once an individual can think logically using symbols and is marked by a shift away from "concrete" thought, or thought bound to immediacy and facts, and toward "abstract" thought, or thought employing reflection and deduction. [14]
Goldman Sachs Economic Research estimates that long-term tariffs on imports from Canada and Mexico could raise core inflation – measured by the PCE – by 0.7% and reduce economic growth by 0.4%.