Exploring the various interpretations of "test bias"

Area of Science:

• Psychometrics
• Educational Measurement
• Social Sciences

Background:

• Test bias is a significant concern, particularly for diverse examinee groups who may underperform on standardized tests.
• The term "test bias" encompasses various interpretations, leading to confusion and debate.

Purpose of the Study:

• To clarify the five distinct meanings of "test bias": mean group differences, differential predictive validity, differential item functioning, differing factor structures, and unequal consequences.
• To review the empirical and theoretical evidence for each interpretation of test bias.
• To differentiate between true forms of test bias and other phenomena.

Main Methods:

• Literature review and synthesis of empirical and theoretical evidence.
• Conceptual analysis of five common interpretations of "test bias".

Main Results:

• Mean group differences and unequal consequences are not actual forms of test bias.
• Differential predictive validity raises significant concerns regarding test bias.
• Differential item functioning and differing factor structures are also considered forms of test bias.

Conclusions:

• Accurate and precise use of the phrase "test bias" is essential.
• Standardized testing offers benefits for diverse examinees when bias is properly understood and addressed.
• Further research and careful consideration are needed to ensure fair and equitable testing practices.