CHILD DEVELOPMENT PEDAGOGY

Detailed explanation-1: -It refers to a class of objects having more than one feature in common. Sometimes called “and” concepts: To belong to the concept class, an item must have “This feature and this feature and this feature.” For example, a motorcycle must have two wheels and an engine and handle bars.

Detailed explanation-2: -a concept that is defined by a set of attributes, every member of which must be present for the concept to apply. For example, the concept brother requires the joint presence of the attributes (a) male and (b) sibling, neither of which may be omitted. Compare disjunctive concept.

Detailed explanation-3: -Conjunctive concepts are defined as those where positive instances display all the values named by the con-cept. Positive instances of disjunctive concepts, on the other hand, need display only one of the values named by the concept.

Detailed explanation-4: -An example of an experimental definition of a disjunctive concept is “a triangle, a blue figure, or both.” By this definition any triangle whether or not blue and any blue figure whether or not triangular would qualify for membership in the category; all other instances would be excluded.

Detailed explanation-5: -This process of developing categories is called concept formation. For example ‘animal’ is a concept that contains other sub-concepts and then further sub-concepts. We could divide animals into birds, fish, mammals, and so on. We could then divide birds into robins, sparrows, owls, and so on.