The use of only college students, volunteers, or participants from one locale _____ the _____ validity of a study.
A)enhances; internal
B)weakens; external
C)enhances; external
D)weakens; internal

Question

Quizplus · Accepted Answer

Using a homogeneous group like college students or volunteers from one locale limits the generalizability of the study findings to the broader population, thus weakening its external validity.

The Use of Only College Students, Volunteers, or Participants from One