Human intelligence is, generally speaking, the mental quality that consists of the abilities to learn from experience, adapt to new situations, understand and handle abstract concepts, and use knowledge to control an environment. However, the question of what, exactly, defines human intelligence is contested, particularly among researchers of artificial intelligence, though there is broader agreement that intelligence consists of multiple processes, rather than being a single ability.
What is human intelligence?
Can human intelligence be measured?
There is a long history of efforts to measure human intelligence. Modern theories of measurement can be traced to the French psychologist Alfred Binet and the English scientist Francis Galton, both of whom were researching intelligence during the second half of the 19th century. Standardized intelligence tests became popular during the 20th century, though their shortcomings have been extensively documented.