maintenance service - Computer Definition A service provided to keep a product in good operating condition. One of the strong selling points for the rise of software as a service (SaaS) was that all program maintenance is provided by the vendor of the application. See SaaS.
For the former trade union, see Amalgamated Society of Painters and Decorators. Antisocial personality disorder (ASPD), also known as dissocial personality disorder (DPD) and sociopathy, is a personality disorder, characterized by a pervasive pattern of disregard for, or violation of, the rights of others.
Psychopathy versus sociopathy. Psychopath, sociopath and antisocial personality disorder are often used interchangeably. Even in the definition of psychopath above one is used to describe the other.haracteristics. No definition of psychopath will typically list all the characteristics of the psychopath. In his book The Mask Of Sanity (1941) Harvey Cleckley lists 16 characteristics. However, Robert Hare's psychopathy checklist is commonly used today for diagnosis.