APA Handbook of Testing and Assessment in Psychology. Vol. 1, Test Theory, and Testing and Assessment in Industrial and Organizational Psychology Vol. 2, Testing and Assessment in Clinical and Counseling Psychology Vol. 3, Testing and Assessment in School Psychology and Education
Essentials of Psychological Testing
This online book describes the principles of psychometrics, and how to evaluate tests, select the right test for your needs, administer it appropriately, and interpret the results.
Finding Tests and Measures
Health and Psychosocial Instruments
Provides access to information on psychological measures, e.g., questionnaires, index measures, coding schemes/manuals, rating scales, projective techniques and tests.