Explanation : Dissimilarity is principle of nature. No two people are alike. All the people differ from each other in many a respects. This change/difference is seen in physical form (height, weight, colour), motor abilities, in intelligence level, achievement, attitude, aptitude, interest, learning habits and skills.
Explanation : Thinking is the ability to engage in the process of problem solving, job task planning and organising, finding information, critical thinking, significant use of memory and decision- making.
Explanation : Alfred Binet was a French psychologist, best-remembered for developing the first widely used intelligence test (IQ Test). This first intelligence test, referred to today as the Binet-Simon Scale, became the basis for the intelligence tests still in use today.
Explanation : The achievement motive is relatively stronger in children from progressive families as David McClelland points out that the development of achievement motive is shaped by the environment e.g. parents play an important role, often by providing the kind of environment that allows the achievement motive to flourish.