According to Goode and Hate interview is a foundation upon which all other elements rest, for it is the data-gathering phase. “Interview is an ‘unwritten questionnaire’. In research project the researcher diagonises the feelings of the respondents and proceeds in his work.

According to Goode and Hate various types of interviews are there. They are as given below.

1. Diagnostic Interview:

It informs the researcher to collect information about his past history, family relations and personal adjustment problem.

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2. Clinical Interview:

After a diagnosis it introduces the patient to therapy.

3. Research Interview:

The investigator takes attempts to collect relative information for solving his problems of historical, experimental, survey or clinical type.

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4. Group Interview:

A group interview should consist of some sociable, intellectual and educated persons from whom effective information will be collected.

5. Direct Interview:

It is structured. A set of closed type questions is prepared for it.

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6. Non-directive – It includes the questions of the open-end form and the researcher talks freely about the problem under-study.

7. Focused Interview:

It aims at active responses from the respondents on a specific event.

They point out, generally, the interview conducted by a researcher may be of different in its structure but its sole aim is to collect information from the respondents for this project taken for study.

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Before going to implement the technique the researcher has to follow certain rules and regulations. Conducting interview is a very easy task but getting more and accurate response is really difficult.

A. The researcher must be sociable and faithful to the respondents. So the respondents will express their answer more clearly and freely.

B. He should listen the opinions of the subject patiently.

C. He should encourage the respondents.

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D. He should not become surprise at the response of interviewee.

E. The questions prepared for the hypothesis must be clear in its meaning.

F. No irrelevant conversation should be organised at the time of interview.

G. Asking questions should be specific, and objective in nature.

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H. If the respondent is unable to follow up the questions, it becomes the responsibility of the researcher to repeat again with a clear understanding.