Understanding Who Were the Participants in a Research Study Is

Understanding who were the participants in a research study is important for counselors because the selection of participants directly affects the study's _____

A) Generalizability (the ability to generalize the results of the study to the counselor's clients)
B) Internal Validity (the ability to understand what change mechanism occurred during the study)
C) Reliability (the consistency of a test or measure over time)
D) Validity (whether or not the assessment that was used in the study actually measures what it says it does)