This course provides a broad understanding of the psychometric principles related to psychological assessment. It is the first in a sequence of courses that will continue in the Psy.D. program, and it provides the foundation of knowledge that is necessary for development of the assessment competency in psychology. Special emphasis is placed on the science of psychological assessment, including an introduction to descriptive statistics, reliability, validity, and item analysis. The structure of an assessment battery, conducting clinical interviews, and the use of psychological tests with diverse populations are addressed.