Gaslighting

Gaslighting or gas-lighting is a form of mental abuse in which information is twisted or spun, selectively omitted to favor the abuser, or false information is presented with the intent of making victims doubt their own memory, perception, and sanity. Instances may range simply from the denial by an abuser that previous abusive incidents ever occurred, up to the staging of bizarre events by the abuser with the intention of disorienting the victim.

The term owes its origin to the 1938 play Gas Light and its film adaptations. The term has been used in clinical and research literature.

Etymology

The 1938 stage play Gas Light, known as Angel Street in the United States, and the film adaptations released in 1940 and 1944 motivated the origin of the term because of the systematic psychological manipulation used by the main character on a victim. The plot concerns a husband who attempts to convince his wife and others that she is insane by manipulating small elements of their environment, and subsequently insisting that she is mistaken or remembering things incorrectly when she points out these changes. The original title stems from the dimming of the gas lights in the house that happened when the husband was using the gas lights in the attic while searching for hidden treasure. The wife accurately notices the dimming lights and discusses the phenomenon, but the husband insists she is imagining a change in the level of illumination.