The great Italian Gestalt psychologist Vittorio Benussi was one of the first to be initiated into the mysteries of experimental psychology by Witasek. Benussi was influenced in particular by the topic of Witasek's habilitation thesis, which had defended the view that optical illusions cannot be illusions of judgment, since the same illusion can be present even when we deliberately do not allow our judgments to be misled by the appearances. Witasek therefore attempts to give an account of the phenomena in question purely on the level of sensations and to separate carefully the contributions of.
