Long history (Score 1)

William James wrote about deja vu experience over a century ago and cognitive psychologists have been studying the phenomenon for over 20 years. Researchers like Larry Jacobs at NYU have done fascinating work on the topic as a means to develop theoretical models of human recognition memory, formally known as dual-process models of recognition. This isn't exactly ground breaking research, but it is important in adding to the experimental corpus of knowledge about familiarity and recognition based memory systems; although the models may not be ameliorative, they do have import in understanding normal aging memory decline as well as abnormal memory impairments such as Alzheimer's disease.