Thurstone has mentioned seven primary mental abilities in his theory of intelligence, i.e group factor theory. He created a battery to measure these seven tests which was later named as Tests of primary mental abilities (PMA Test).

The inkblot test is a psychological test. Through this test one can observe personality characteristics and emotional functioning. Psychologists use this test to examine the personality characteristics. This test is used to detect disorders. Ink blot test discloses dominant personality feature.

Extroverted learners possess a social learning style. In addition, they have acute verbal learning styles as well, often communicating through stories or being the first to volunteer for assignments and projects. Introverts generally have a shy nature, and students who are introverted have a solitary learning style, as they often prefer to solve problems on their own. Introverted learners like to brainstorm and seek theoretical exploration. They like to think out a problem and weigh options before moving forward. The extrovert student expresses feeling externally instead of suffering internally.

The factors lying outside the individual in his environment are said to be the external factors influencing his growth and development.

Physical development is the process that starts in human infancy and continues into late adolescent concentrating on gross and fine motor skills as well as puberty. Physical development involves developing control over the body, particularity muscles and physical coordination, nervous system, endocrine glands and so on.

Herbert Spencer propagated surplus energy theory. This theory postulated that a quantity of energy is supplied to an organism which it uses for its survival. Therefore, this theory is not related language development.

According to Kelly “In the process of learning motivation is the central source” .

According to psychologists, the correct sequence of force development is childhood- adolescence-adult status

Childhood

(i) Early childhood - Normally there is a condition of 2 to 6 years. The tendency of simulating and repeating in children (the tendency to duplicatE. is found. There is an increase in socialization and curiosity. According to the psychologist, this period is the best stage of learning the language.

(ii) There is a state of childhood - 6 to 12 years. In this stage, there is a widespread development of intellectual, ethical, social, logical, etc. In children, the importance of discipline and rules in life begins to comprehend.

Adolescence

The condition of 12 to 18 years is very significant, and changes are seen in the physical structure of the person as well. At this stage, there is an increase in both the length and height of the adolescent. In this stage, the tendency of making friends is intense. At this stage, the intellectuals of the adolescent-juvenile are fully developed.

Maturity

It is a state of 18 to 65 years. This stage comes from taking certain maturation in human development. Physical development starts declining. Trends towards social, spiritual, religious and cultural activities.

by E . A . Pill this statement said, "there is a change in the learning person who is following the changes in his environment."

Learning means - Learning. Learning is a process that keeps moving continuously and through which we earn some knowledge or by which our behavior get change. Immediately after birth, the child starts learning.

Learning is helpful in the all-round development of personality. After learning, the person is able to understand him and the world.

Law of effect Thorndike indicates the importance of award and punishment in learning. Edward Thorndike put forward a “Law of effect” which stated that any behavior that is followed by pleasant consequences is likely to be repeated, and any behavior followed by unpleasant consequences is likely to be stopped.