Repetitio mater studiorum.

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Intelligence is a multifaceted concept that's difficult to define comprehensively, but it generally refers to the ability to learn from experience, understand and adapt to new situations, solve problems, and use knowledge to manipulate one’s environment. Here are several facets of intelligence:

Learning and Adaptation

Reasoning & Problem Solving

Memory & Knowledge

Perception

Emotional Intelligence

Creativity

It's important to note that intelligence is still a topic of debate among psychologists and neuroscientists. Traditionally, intelligence was often measured using IQ (intelligence quotient) tests, but many experts now believe that IQ tests capture only a narrow slice of what constitutes human intelligence. Moreover, various cultures might emphasize different abilities or qualities when defining or valuing intelligence, so the concept can be both culturally and contextually relative.

Jean Piaget (1896-1980) was a Swiss developmental psychologist and philosopher best known for his pioneering work in the study of child development and his theory of cognitive development.  He studied natural sciences at the University of Neuchâtel and later obtained a Ph.D. in zoology. However, his professional trajectory shifted when he began working at the Binet Institute in Paris, where he was tasked with standardizing intelligence tests for children. Through his observations, Piaget became intrigued by the systematic errors made by children, leading him to hypothesize that children think differently than adults. This marked the beginning of his extensive research into the nature and development of human intelligence.

"Piaget defined intelligence as an individual's ability to cope with the changing world through continuous organization and reorganization of experience. Reasoning is the essence of intelligence, and it is those reasoning processes which Piaget studied in order to discover how we know." (The Piaget Primer, p. 13)

Assimilation is the process of taking in new information and fitting it into a preconceived notion about objects or the world.

Accomodation means adjusting to new experience or objects by revising the old plan to fit the new information.

"Schema (pl. schemata) is a simple mental image or pattern of action, a form of organizing information that a person uses to interpret the things she sees, hears, smells and touches." (The Piaget Primer, p. 17)

In modern cognitive sciences, we more often use the term mental|cognitive|internal "representations" (C-representations = comprehension|understanding representations; P-representations = production|action representations)

"Adaptation is a process of seeking an equilibrium between the self and the environment. This equilibrium, or equilibriation as Piaget refers to it, is a balance between the process of assimilation and accomodation." (The Piaget Primer, p.18)

"Over time, as these processes of assimilation and accommodation repeat and compound, they lead to major shifts in understanding—ushering children into a new developmental stage." (GPT4)

 

Instrumental Enrichment (IE): An instructional method developed by Feuerstein, IE aims to enrich an individual's learning and thinking strategies through a series of paper-and-pencil tasks. 

Intelligence is not a static trait but can be modified under the right educational interventions.