The primary goal of using a questionnaire in social research is to systematically gather specific information from individuals or groups.
This objective centers on collecting authentic data. The data collected forms the basis for analysis, enabling researchers to understand social phenomena. The emphasis on 'authentic' highlights the need for accurate and reliable information.
In summary, the essential purpose of a questionnaire is the methodical collection of authentic data to support social research aims.
| List – I (Types of reliability) | List – II (Procedure) |
| (a) Stability | (i) Administer one test and correlate the items to each other. |
| (b) Equivalence | (ii) Administer different tests to the same individuals over a period of time. |
| (c) Equivalence and Stability | (iii) Administer the same test to the same individuals over a period of time. |
| (d) Internal consistency | (iv) Administer different tests to the same individuals at about the same time. |