Methods of collecting primary data
Following are given the methods for collection of such data:
(i) Direct personal investigation
(ii) Indirect oral investigation
(iii) Through local correspondents
(iv) Mailed Questionnaire
(v)Schedules sent through enumerators
1. Direct personal Investigation
Here, the investigator himself visits the persons those are source of the data and collects
necessary information either through interview with the persons concerned or through
observation of the data on the spot. This method is suitable where intensive study of any
phenomenon is required.
This method has many merits and demerits which are given as following:
Merits:
1. The data is more reliable as they are obtained directly.
2. Sensitive questions can be avoided.
3. There is chance of more response in it.
4. The questions can be adjusted according to the standard of the sources.
5. There is uniformity in data.
Demerits:
1. It is not suitable where the field is very vast and wide.
2. It is very much expensive.
3. It needs a large number of enumerators.
4. It takes long time to collect the data from all the persons.
5. It is purely subjective in nature, therefore the success of investigation depends mostly
intelligence, skill, tact, insight, honesty and other qualities of investigators.
Suitability:
This method is suitable when:
1. Area of investigation is limited.
2. A very high degree of accuracy is required.
3. The result of investigation is to be kept secret.
4. Area of investigation is homogeneous i.e. having same qualities.
Precautions:
1. Investigator should be trained and skilled.
2. Investigator should not have personal bias.
3. Investigator should be polite and questions should be simple.
4. Investigator must belong to the culture of the informant.
