Yin and yang is a complex, relational concept in Chinese culture that has developed over thousands of years. Briefly put, yin and yang represent the two opposite principles observed in nature. Generally speaking, yin is characterized as feminine, still, dark, negative, and an inward energy.
The Diagnostic and Statistical Manual of Mental Disorders, Fourth Edition (DSM-IV) was developed and is maintained by the American Psychiatric Association. DSM-IV provides a standardized classification system for the diagnosis of mental health disorders for both children and adults.
Its objective is to do for psychology what Grayâs Anatomy achieved for physiology, what Mendeleevâs Periodic Table of Elements did for chemistry, and what the Diagnostic and Statistical Manual of Mental Disorders did for psychiatry and clinical psychology. A New Foundation for Mapping Human Nature.