Final answer:
A symbolic interactionist is likely to use participant observation as a research technique to study interactions and meanings created by individuals.
Step-by-step explanation:
A symbolic interactionist is a sociological perspective that focuses on the interactions and meanings created by individuals through symbols and social processes.
The research technique most likely used by a symbolic interactionist is participant observation.
This involves the researcher actively participating in the social setting being studied, observing interactions, and documenting the meanings and symbols used by individuals.