A researcher wishes to study the effects of preoperative teaching on anxiety levels among toddlers and preschoolers undergoing surgery.To reduce the potential for measurement error,the researcher will
A) ask study subjects to describe feelings of anxiety.
B) develop a new tool to measure anxiety levels in children.
C) rely on multiple observers to collect data for this study.
D) use a standardized checklist of anxiety behaviors.

Question

Quizplus · Accepted Answer

Measurement will be more precise if researchers use a well-developed,reliable scale.Using a checklist of anxiety behaviors reduces the likelihood of observer error.The technique of asking subjects to describe feelings provides in-depth data,but not precise measures,and is used in qualitative research.A new tool that has not been evaluated for reliability and validity has an increased chance of error.Increasing the number of observers increases the likelihood of error.

A Researcher Wishes to Study the Effects of Preoperative Teaching