The document discusses intelligence, giftedness, and intellectual disability. It defines intelligence as the ability to learn, adapt, solve problems, and shape one's environment. Intelligence is influenced by genetics, environment, and culture. Common intelligence tests measure verbal comprehension, processing speed, and working memory. Intellectual disability is characterized by below-average intellectual functioning and adaptive skills that emerge by age 18. Giftedness refers to above-average intelligence or exceptional talent, and gifted individuals often show early mastery in their domain of talent.