While there is no single official clinical exam titled the "OSDD-1b Test," several established psychological tools are used to identify this condition. OSDD-1b is a clinical subtype of (OSDD). It is characterized by the presence of distinct identity states (alters) without the recurrent amnesia typically required for a Dissociative Identity Disorder (DID) diagnosis .

: A 28-item self-report survey that measures how often you experience various types of dissociation, such as absorption or depersonalization.

OSDD-1 is split into two subtypes:

Other Specified Dissociative Disorder Type 1b (OSDD-1b) is a clinical diagnosis given to individuals who exhibit (alters) but do not experience the recurrent amnesia characteristic of Dissociative Identity Disorder (DID).

: The individual has two or more differentiated identity states (often called "parts," "alters," or "headmates").