Howard Gardner: Created the theory of multiple intelligences, which says that human beings have 8 different “sections” of intelligence.
E.L. Thorndike: Developed the puzzle box, used to study animal psychology and intelligence; postulated the idea of connectionism which is a proponent of learning and relates basic associations between cause and effect; developed the law of effect principle which states that events followed by satisfaction will be linked with the event and will most likely repeat when the event is repeated.
Charles Spearman: Developed the theory of general intelligence, which rationalized that intelligence is a broad cognitive ability that can be calculated.
David Wechsler: Created the Wechsler Adult Intelligence Scale to measure intellectual ability in adults and the Wechsler Intelligence Scale for Children which measures mental capacity in youths.
Broca: Discovered an area which is called Broca’s lobe in the left frontal lobe that is essential to language development.
Wernicke: Discovered what is now called the Wernicke’s area, which is a part of the cerebral cortex related to speech.
Alfred Binet: Invented the first widely usable intelligence test, which is known today as the IQ test.
Eric Erikson: Created the eight stages of psychosocial development that segments human development from infancy to adulthood.
Lewis Terman: Expanded and standardized Alfred Binet’s intelligence test.
Kubler-Ross: Created the five stages of grief- denial, anger, bargaining, depression, and acceptance.
Ernest Weber: Research led to the formation of Weber’s law which states that a just noticeable difference in stimulus is proportional to the magnitude of the original stimulus.
Mary Ainsworth: Contributed the attachment theory which describes the foundations of human relationships.
Carl Jung: conceptualized extraverted (outgoing) and introverted (reserved) personalities as well as the collective unconscious which is a source