Background and Purpose

Nurses must competently demonstrate psychomotor skills. Few reliable and valid instruments are available for psychomotor evaluation for disaster skills, including the skill of decontamination. Objectives

The purpose of this study was to develop and refine an instrument to measure the skill of decontamination. Design

A seven step instrument development design was implemented that included content validity and reliability as well as inter-rater reliability analysis. Setting and Participants

A convenience sample of approximately 140 participants was drawn from two colleges of nursing at two large academic universities. The sample included senior nursing students in either their community or final practicum nursing course. Methods

Based on a sample of 140 students who participated in a decontamination training experience using virtual reality simulation, a seven step established process for assessment of reliability and validity was implemented to develop a checklist for the skill of decontamination. Results

The final instrument statistics: Content Validity Index for the overall instrument score was 0.94, Internal consistency coefficient = 0.607(KR-20) and Inter-rater reliability = 0.9114. Conclusions

This instrument provides a reliable and valid assessment of nurses' competency in performing the skill of decontamination offering a template for educators to develop similar tools.