An observational technique in which a researcher complies a record of observations about a single participant is known as a

An observational technique in which a researcher complies a record of observations about a single participant is known as a Participant observation method.

Explanation:

In participant observation method researcher used to survey a group which consists of a similar kind of persons. In this technique researcher not only observe but also participate in the group. So that he can understand the participant intensely. In qualitative research people's opinion, view matters most.

On the basis of the discussions which divide into number of sittings researcher draw a conclusion about the taken fact and then prepare a report on the basis of judged data and collected information.