Chapter 7: Thinking and Intelligence

Concepts serve as categorical frameworks that can be either naturally derived from experience or artificially constructed with precise definitions, while prototypes function as the most representative examples within those categories. Schemas organize related concepts into mental structures that enable rapid processing, including role schemas that define behavioral expectations and event schemas that guide routine sequences of actions. The discussion of language emphasizes its role as a systematic communication system composed of phonemes and morphemes organized through grammar and syntax to convey meaning. Language development follows predictable developmental stages and appears to be biologically rooted, though the relationship between language and thought remains complex, as evidenced by linguistic determinism showing how different languages shape perception of time and other concepts. Problem-solving strategies range from trial-and-error approaches to algorithms that guarantee solutions and heuristics that provide efficient mental shortcuts. The chapter identifies significant obstacles to effective problem-solving, including mental sets that rigidly apply past solutions, functional fixedness that limits object use to conventional purposes, and various cognitive biases such as anchoring, confirmation bias, and hindsight bias that distort reasoning. The chapter then shifts focus to theories of intelligence, presenting multiple frameworks including Spearman's general intelligence factor, Cattell's distinction between crystallized and fluid intelligence, Sternberg's triarchic model encompassing practical, analytical, and creative dimensions, and Gardner's multiple intelligences theory recognizing diverse cognitive capacities including linguistic and bodily-kinesthetic abilities. Intelligence measurement through standardized testing is discussed, including historical development and contemporary instruments like the WAIS and WISC, with scores typically distributed along a normal curve. The chapter concludes by addressing the nature-nurture debate regarding intelligence origins, the range of reaction theory suggesting genetic potential is expressed through environmental factors, and specific learning disabilities like dyslexia and dysgraphia that affect particular cognitive domains without reflecting overall intellectual capacity.