Pesticide Applicator Certification Tests: Validation and the Limits of Score Meaning

Andrew Martin, Fred Whitford


A review of the basic elements of modern validity theory and an argument-based approach to validation clarifies the principle reason for a deliberative, job-oriented approach to pesticide applicator certification test development: appropriate score interpretation and use. When more meaning is imputed to scores than is warranted, stakeholders may be misled and program credibility can suffer. Special care should be taken to avoid making predictive claims for certification test scores. Caution is also advised when associating the concept of "competence" with score results.

Keywords: test, validation, scores, pesticide, applicator, certification

Full Text: PDF

Creative Commons License


Journal of Pesticide Safety Education by American Association of Pesticide Safety Educators is licensed under a Creative Commons Attribution-Noncommercial-No Derivative Works 3.0 United States License.


Copyright (c) by the American Association of Pesticide Safety Educators, ISSN 1553-4863