Poor sleep is not sufficient to make people consider themselves to have insomnia… and poor sleep may not even be necessary, reports Research Digest.

The paper, by Kenneth Lichstein at the University of Alabama, explores the implications of “Insomnia Identity”: how it contributes to health problems, and may be an obstacle to recovery.

The hallmark of insomnia is regularly having such poor sleep that it affects your daily function. This implies a person with insomnia will have poor sleep, as measured objectively, and that they will complain about their lack of sleep.