Gestalt therapy was developed in the 1940s and 1950s by Fritz Perls, a psychiatrist and psychoanalyst, and his then-wife, psychotherapist Laura Perls, as an alternative to traditional, verbally ...

Flashing lights. Intermittent beeps. Curious machines assembled from motors, prisms, electromagnets, and “mercury rectifiers”. Stepping inside Tate Modern’s new exhibition is like entering the secret ...