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Reliability and Validity

Reliability and Validity

Reliability and validity are two important considerations that must be made with any type of data collection. Reliability refers to the ability to consistently produce a given result. In the context of psychological research, this would mean that any instruments or tools used to collect data do so in consistent, reproducible ways.

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Generating Strictly Controlled Stimuli for Figure Recognition Experiments

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Published on: March 18, 2019

Setting and validating the pass/fail score for the NBDHE.

Tsung-Hsun Tsai, Barbara Leatherman Dixon

Journal of Dental Hygiene : JDH

|August 30, 2013

Summary

This summary is machine-generated.

The National Board Dental Hygiene Examination (NBDHE) pass/fail score was established using the Objective Standard Setting (OSS) method. This ensures a valid standard for dental hygiene licensure, with consistent failure rates and high reliability.

Keywords:

NBDHE Objective Standard Setting method pass/fail score validity

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Area of Science:

Dental Hygiene Education
Psychometrics
Standard Setting

Background:

The National Board Dental Hygiene Examination (NBDHE) requires a robust method for determining the pass/fail score.
Ensuring the validity and reliability of licensure examinations is critical for public health and professional standards.

Purpose of the Study:

To describe the process of setting the pass/fail score for the NBDHE.
To validate the established pass/fail score using psychometric analysis.

Main Methods:

The Objective Standard Setting (OSS) method was employed, involving a panel of 11 dental hygiene experts.
Experts determined criterion items, mastery levels, and confidence intervals for minimally competent candidates.
The Rasch measurement model was used to establish the score scale based on expert judgments.

Main Results:

Statistical analysis indicated consistency between the actual and OSS-determined failure rates (2.4% vs. 2.8%).
The analysis revealed the lowest error of measurement at the pass/fail score point.
The highest reliability (0.97) was achieved at the pass/fail score point.

Conclusions:

The established pass/fail score serves as a valid benchmark for dental hygiene licensure decisions.
The new standard, approved by the Joint Commission, was implemented in 2011.