To Determine Why Jeffrey Dahmer Became a Mass Murderer,a Researcher

Multiple Choice

To determine why Jeffrey Dahmer became a mass murderer,a researcher spent a great deal of time talking with both Dahmer and people who knew him both as a child and as an adult.The personal in-depth approach the researcher used is called a(n)

A) case study.
B) archival study.
C) correlational study.
D) naturalistic observation.