Instruction type was manipulated between-subjects, one group of participants received deductive instructions (i.e., to treat the premises as given and only draw necessary conclusions) and a second group of participants received probabilistic instructions (i.e., to reason as in an everyday situation we called this “inductive instruction” in the manuscript). To provide evidence for multiple processes we aimed to establish a double dissociation of two variables: instruction type and problem type. Singmann and Klauer (2011) were interested in whether or not conditional reasoning can be explained by a single process or whether multiple processes are necessary to explain it.
