Published by the American Psychiatric Association (APA), the DSM-5 is the current classification system of psychiatric illnesses. This handbook serves "as a template to estimate the incidence (new cases) and prevalence (existing cases) of mental disorders in the general population."
The two volumes of the Encyclopedia of Psychological Assessment contain a series of 235 entries, organized alphabetically, and covering a variety of fields. Each entry includes a general conceptual and methodological overview, a section on relevant assessment devices, followed by links to related concepts in the Encyclopedia and a list of references and authoritative coverage of every major area of psychology.
Series includes: APA Addiction Syndrome Handbook, APA Educational Psychology Handbook, APA Handbook of Counseling Psychology, APA Handbook of Ethics in Psychology, APA Handbook of Inducstrial and Organizational Psychology, APA Handbook of Multicultural Psychology, APA Handbook of Research Methods in Psychology, APA Handbook of Sexuality and Psychology and the APA Handbook of Testing and Assessment in Psychology.