In the previous article we had discussed the basic concept and definitions of Intelligence. This article summarises the different theories of intelligence postulated by different researchers to explain the nature of intelligence. Let’s start with the first intelligence theory: Uni or one factor theory As mentioned in Concept & Definitions of Intelligence, Alfred Binet was

Intelligence is one of the basic parameters employed to know how individuals differ from one another. In broader sense, the term Intelligence is used to denote the presence of such qualities as alertness, quickness of mind, level of one’s academic success, status in an occupation, or the acquisition of an eminence in a particular field