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Theory of cognitive development
Although there is no general theory of cognitive development, the most historically influential theory was developed by Jean Piaget, a Swiss Psychologist (1896-1980). His theory provided many central concepts in the field of developmental psychology and concerned the growth of intelligence, which for Piaget, meant the ability to more accurately represent the world, and perform logical operations on representations of concepts grounded in the world. The theory concerns the emergence and acquisition of schemata - schemes of how one perceives the world - in "developmental stages", times when children are acquiring new ways of mentally representing information. The theory is considered "constructivist", meaning that, unlike nativist theories (which describe cognitive development as the unfolding of innate knowledge and abilities) or empiricist theories (which describe cognitive development as the gradual acquisition of knowledge through experience), it asserts that we construct our cognitive abilities through self-motivated action in the world.
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Mind & Brain News
March 25, 2026
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Mar. 23, 2026 Scientists have uncovered a hidden “death switch” in the brain that may be driving Alzheimer’s disease—and even found a way to turn it off in mice. The culprit is a toxic pairing of two proteins that, when combined, triggers the destruction ...
Mar. 22, 2026 Scientists have uncovered a surprising brain-based trigger for high blood pressure, tracing it to a small region in the brainstem that normally controls breathing. This area, which kicks in during forceful exhalations like coughing, laughing, or ...
Mar. 22, 2026 GLP-1 medications like semaglutide (Ozempic) may offer unexpected mental health benefits alongside weight loss. A large study found major drops in depression, anxiety, and psychiatric-related hospital visits among users. Even substance use disorders ...
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Mar. 20, 2026 Many people believe closing their eyes sharpens hearing, but that is not always true. In noisy settings, participants struggled more to hear faint sounds with their eyes closed, while matching visuals made it easier. Researchers found that shutting ...
Mar. 18, 2026 Your morning coffee or tea could be quietly supporting your brain health. A long-term study found that moderate consumption of caffeinated coffee or tea was linked to an 18% lower risk of dementia and better cognitive performance over time. The ...
Mar. 17, 2026 Early life stress may set the stage for long-term digestive problems by disrupting the gut-brain connection. Studies in both mice and thousands of children found links to symptoms like pain, constipation, and IBS. Scientists discovered that ...
Mar. 17, 2026 A key Alzheimer’s drug has finally revealed its secret. Researchers discovered that lecanemab works by activating the brain’s immune cells—but only through a specific part of the antibody called the Fc fragment. This piece acts like a trigger, ...
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Mar. 24, 2026 Scientists have found that your brain separates memories into “what” and “where/when” using two different groups of neurons. One set responds to specific objects or people, while another ...
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Mar. 13, 2026 Tiny plastic particles may be quietly threatening brain health. New research suggests microplastics—now widely found in food, water, and even ...
Mar. 12, 2026 Researchers have discovered a surprising change in how cells produce energy in people with depression. Brain and blood cells in young adults with major depressive disorder produced more energy ...
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