Carsten Höller disturbs his viewers' assumptions with installations or interactive sculptures that deliberately but often playfully induce doubts and confusion.04.12.2003 Carsten Höller disturbs his viewers' assumptions with installations or interactive sculptures that deliberately but often playfully induce doubts and confusion. Formerly a scientist (in evolutionary ecology and olfactory communication in insects), Höller uses the audience as subjects of perceptual and psychological experimentation. Quasi-scientifically, his work often sets out to study a particular concept. In the past, Höller has made series devoted to the ideas of security, children, love, hallucinations, happiness, animals, games, doubt/certainty, and a group of sculpture/vehicles that looked at different modes of travel.