The current chapter provides an overview of some of the principles, aims, and procedures involved in conducting various kinds of psychological assessments. The learning objectives of this chapter are:

Appreciation of the commonality and importance of psychological assessment for clinical psychologists’ work in addition to issues regarding the training of graduate students in assessment practices.

Be introduced to what constitutes psychological assessment broadly as well as the specific aims and purposes of assessment and different types of psychological assessments used in research and clinical practice.

Appreciation of the kinds of issues related to clinical decision making that arise from psychological assessment and how the decisions can have an impact on people’s lives.