A researcher wishes to conduct a study of a small number of subjects on a large hospital intensive care unit.To minimize problems associated with extraneous variables in the study setting,the researcher will
A) ensure double-blind data collection methods.
B) randomly assign subjects to treatment and control groups.
C) test the reliability of study measures.
D) train a small number of nurses to administer the intervention.

Question

Quizplus · Accepted Answer

One way to reduce the effect of extraneous variables is to train a small number of staff to administer the intervention to improve consistency.Double-blind data collection,random assignment of subjects,and reliability of test measures are important to improve control and reduce bias.Extraneous variables in complex settings can influence scores on the dependent variable.

A Researcher Wishes to Conduct a Study of a Small