The intelligence try to throw light on the structure of intelligence. The some major theories of intelligence can be described as under.
This theory holds that intelligence consist of only one factor i.e: a fund of intellectual competence.
Thus theory consist intelligence is a combination of numerous separate element or factors, each being a minute element of ability.
iii)Sparemens Two-factor Theory:
This theory advocates that all the intellectual task can be categorized into certain definite groups. Each group has unique common factor known as group factor. Here the thory is described as G& S factor where G means general factor which is shared with all intellectual activities and S means specific factor which it is shared with known.
iv)Vernons Hierarchical Theory:
This theory suggests a hierarchical structure for the organization of intelligence in the shape of G, an overall factor branching into two major group factors and various specific factors. Guilford has tried to illustrate his view point through a model of intellect involving three interpreted and interacted basic parameters: operation, contents & products.