Benjamin Bloom and his associates classified three big Domains of Objectives

1. Cognitive Domain - (Bloom et al 1956)- domain of thought process.

a. Knowledge
b. Comprehension
c. Application
d. Analysis
e. Synthesis
f. Evaluation

2. Affective Domain - (Krathwohl, 1964) - domain of valuing attitude and appreciation.

a. Receiving
b. Responding
c. Valuing
d. Organization
e. Characterization by a value or value complex

3. Psycho motor Domain - (Simpson, 1972) - domain of the use of psycho motor attributes.

a. Perception
b. Set
c. Guided response
d. Mechanism