1. Characteristic Features of a Good Research Design

2. A good research design should always fulfill the following four conditions;
objectivity,
reliability,
validity
and generalizability

3. Objectivity:
The findings are said to be objective when they pertain to the method of data collection and the scoring of the responses. The objectivity in respect of the procedure may be judged by the degree of agreement between the final scores assigned to various persons by more than one independent observer. The more the agreement among the observers the more objective are the observation, recording and evaluation of the responses. Therefore, a good research design should permit fairly objective measuring instruments in which every observer visualizing a performance comes to the same conclusion.

4. (b) Reliability:
The question of reliability of knowledge is usually raised when the presence of a problem arouses in the knower a demand, not only for something more than mere conjecture, but for something for which it shall be useful in a given situation and perhaps in other similar situations. Reliable knowledge means any claim that is substantiated as trustworthy for a given purpose.

5. (c) Validity:
Validity implies self-consistency or absence of self-contradiction. It is identified with formal truth or self-consistency. A valid reasoning conforms to the rules of correct reasoning. It is that type of reasoning where conclusions automatically follow from the premises legitimately.

6. (d) Generalisability:
The degree of generalisability is known in terms of the replicability and reproducibility of the findings in spite of different measures and settings respectively.