Developing and Validating Rapid Assessment Instruments (Pocket Guide to Social Work Research Methods)

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This is an excellent small textbook on how to develop psychological research inventories and assessments. It tackles all relevant steps such as item development, operationalization of the underlying construct, item validation, item reduction, reliability testing. I can strongly recommend this small book for any student as a step by step introduction to the topic of research assessments. Is very illustrative and thus, can also be used for self-study.