detection, but this is admittedly speculative. Thus, despite the lack of overall group differences in olfactory function, the present findings provide strong evidence for the hypothesis that certain aspects of olfactory function are impaired in at least a subgroup of young individuals at risk for psychosis, and also linked to the presence of negative symptoms, which has been found to be a predictor for conversion to psychosis (e.g., Cannon et al., 2008; Piskulic et al., 2012; Velthorst et al., 2009; but see also Corcoran et al., 2011).
