Unit 2.8: Intelligence

Reification: The act of regarding an abstract concept as a real, tangible entity. For example, understanding a thought as something that can be touched or measured.
Definition of Intelligence: The ability to learn from experiences, solve problems, and adapt knowledge to new situations.
- Intelligence is a complex concept that resists simple definition.
- Various psychologists have different approaches to defining and studying intelligence.
- Ongoing debate regarding the influence of nature (genetics) vs. nurture (environment).
- Key inquiry: Is intelligence stable or can it grow through experience?
- Intelligence is often viewed within the context of environmental factors that influence an individual's capabilities.
- Example: In a hunter-gatherer society, physical ability may be considered a measure of intelligence over cognitive skills such as reading or writing.
- Central questions:
  - Should intelligence be viewed as a single entity or measure?
  - Can it be measured on multiple scales?

General Intelligence (g): Concept introduced by Charles Spearman, proposing that a single underlying factor influences all mental abilities.
- According to Spearman, general intelligence is measurable through various tasks on intelligence tests.
- Factor Analysis: A statistical procedure used to identify related items on tests, termed factors, that contribute to performance across different dimensions.
- Spearman hypothesized that individuals scoring high in one area of intelligence also tend to score well in others.
- Early criticism of this idea came from L.L. Thurstone, who identified seven clusters of primary mental abilities but did not consolidate these into a single score. He suggested that strong patterns of ability exist, as individuals who score high in one primary area often excel in others, supporting the idea of multiple intelligences.

Recent understanding suggests intelligence might consist of several mental abilities that work cooperatively, explaining aspects of general intelligence.

Fluid Intelligence (Gf): The capacity to reason and think abstractly quickly; tends to decrease with age, particularly in adulthood.

Crystallized Intelligence (Gc): Refers to the accumulation of knowledge and verbal skills; generally increases with age.
Cattell-Horn-Carroll (CHC) Theory: A contemporary theory stating that intelligence comprises both Gf and Gc, with Gf representing ability to acquire new skills and Gc representing knowledge already obtained.
- Both types of intelligence interact, where fluid intelligence reflects the ability to apply knowledge rapidly and abstractly, while crystallized intelligence grows as we learn.
- Aging impacts fluid intelligence negatively (slower reaction times, less neural plasticity).

Savant Syndrome: A condition in which a person showcases exceptional skill in a specific area (e.g., computation, artistic skills) despite having otherwise limited mental functioning in other areas.

Grit: Refers to passion and perseverance for long-term goals; significant in the psychological understanding of motivation and achievement in the context of intelligence.