A standardized measurement used to assess a person's cognitive abilities, such as vocabulary, general knowledge, reading comprehension, and spatial reasoning.

economic sector based on intellectual activities such as education, scientific research, and information technology

The age of a person's mental development as measured by a standardized intelligence test; used as a basis for education and psychological assessment; also called [[心理年龄|心理年齡|xin1 li3 nian2 ling2]]

Investment in the development of talent or human capital, particularly money spent by a country, company, or family on education and vocational training.

toy designed to stimulate a child's intelligence or mental development; intellectual toy

to recruit foreign or outside expertise and intellectual resources

psychological factors other than intelligence that influence learning and performance, such as willpower, personality, emotions, and character

a condition of below-average intelligence or mental ability; intellectual disability

A score derived from standard tests designed to assess human intelligence; often calculated by dividing mental age by chronological age and multiplying by 100.