Related Experiment Video

Updated: Jan 20, 2026

What is an Experiment?
01:12

What is an Experiment?

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Three Years' Experience

Mary G Harper1, Patsy Maloney

  • 1Mary G. Harper, PhD, RN-BC, is Director of Nursing Professional Development, Association for Nursing Professional Development, Chicago, Illinois. Patsy Maloney, EdD, MSN, RN-BC, CEN, NEA-BC, is Senior Lecturer, Nursing and Healthcare Leadership, University of Washington Tacoma.

Journal for Nurses in Professional Development
|September 7, 2019
PubMed

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What is an Experiment?01:12

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The randomization process involves assigning study participants randomly to experimental or control groups based on their probability of being equally assigned. Randomization is meant to eliminate selection bias and balance known and unknown confounding factors so that the control group is similar to the treatment group as much as possible. A computer program and a random number generator can be used to assign participants to groups in a way that minimizes bias.
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