While studying psychology, you will learn that intelligence has caused significant interest to most psychologists. There is no universal definition of intelligence; there is much debate about what is actually meant by this term. Is intelligence a general ability or is it several independent systems? Is it a characteristic of the brain, behavior, or is it both? Intelligence is primarily a term in Psychology that generally refers to mental abilities, problem solving skills, abstract thoughts, etc. This capability is expressed in many aspects of the human life. Intelligence is comprised of various mental processes which include: memory, learning, perception, decision making, thinking and understanding.
According to the early researches of the American psychologist L.L. Thurston, intellectual ability can be reduced to 7 factors, which he called primary mental abilities. All of them were of great importance in solving complex intellectual tasks. Every factor is indicated by a single letter of the alphabet: