regressionist

English

Etymology

From regression +‎ -ist.

Noun

regressionist (plural regressionists)

1. One who promotes or follows regressionism.

   This politician is a regressionist who disregards what people care about now.

2. One who travels back in time.
   • 2010, Denise Linn, Past Lives, Present Miracles‎:

     She, too, was a past-life regressionist. I asked, “Do you remember if you had a lifetime in connection with Nazi Germany?” She replied, “Oh, I thought you knew. I was a prison warden at Auschwitz. […]

3. (psychotherapy) One who carries out regressions, inducing a patient to act out behaviour typical of an earlier developmental stage.