Abstract
The influence of instructional experience on achievement item bias. Identification of factors responsible for item bias has not reached initial expectations. Research to determine its causes has followed two main interrelated lines: items characteristic or differential characteristics of people. We present an empirical study that explores the effect of receiving different instructional experiences on achievement item bias. Manipulating instructional strategy intentionally induces bias. The assignment of people to the comparison groups depends on the instructional strategy received. Mantel-Haenszel's statistical procedure χ2 detects a possible differential functioning of 10 items especially designed to display bias. Implications of results are addressed from the validity theory perspective.
