ABSTRACT
One of the core features of intuition is that at least parts of the information integration processes remain opaque to the decider. This obviously makes life for intuition researchers harder: it becomes impossible to use introspectionbased methods or self-report measures to get a first idea about the processes and to derive (and later test) hypotheses (but see Witteman & van Geenen, chapter 3, this volume). Properties of the information integration process underlying intuition have to be derived from overt behaviour, physiological reactions or even by using neuronal activation measures. In this chapter we will outline a very general methodological approach and a statistical method that permits investigating intuitive as well as deliberate processes based on simple behavioural measures only. The method allows the researcher to make sound inferences about unconscious decision processes without “looking inside the brain” using expensive and effortful neuroscientific methods.
