An Instructor of a Social Work Research Methods Course Presents

Multiple Choice

An instructor of a Social Work Research Methods course presents a lecture on the limitations of group research designs. She states that some research designs allow for causal inferences, others shed light on correlations, and some designs are used to describe social phenomena. Which group design has a weakness of not including a comparison or control group?

A) One-group pretest/posttest design
B) Time series design
C) Pretest/posttest comparison group design
D) Pretest/posttest control group design