Direct Personal Investigation

In this method the investigatior obtains the data by a personal interview called observation. This method is suitable for an investigation which is very confidential and complex that it requires personal attention of an investigator.

Merits :
-The data collected will be more accurate.
-The doubt of informations can be checked and clarified.
-The response will be more.
Demerits :
-Skilled investigators are required to collect data.
-It takes more time and money.
-It is possible only when the area of investigation is small.