LuAnn, a Child Development Researcher, Recently Conducted a Study in a Hospital

Multiple Choice

LuAnn, a child development researcher, recently conducted a study in a hospital nursery to examine the feeding habits of newborn babies. She did not tell parents her identity or the purpose of her work when she asked them questions. This concern with LuAnn's study is most directly related to a concern with

A) external validity.
B) internal validity.
C) reliability.
D) ethics.