Deficits of olfactory function are common in schizophrenia, affecting threshold sensitivity, discrimination and identification of odors (e.g., reviewed by Moberg et al., 1999; Moberg & Turetsky, 2003). Although olfactory abnormalities have also been found in several neurological diseases (Barresi et al., 2012) and other psychiatric disorders (Buron & Bulnena, 2013; Schecklmann et al., 2013), most research in this area has been performed in schizophrenia (Atanasova et al., 2008). Studies using psychophysical measures of odor identification have consistently demonstrated that schizophrenia patients, when compared to healthy controls, have a robust impairment in correctly naming or identifying different odors (Cohen et al., 2012a; Kamath et al., 2011). This deficit in odor identification is not due to increased odor detection threshold (Moberg et al., 2006), the findings for which have been less consistent (Martzke et al., 1997; Moberg et al., 1999; Purdon & Flor-Henry, 2000). Moreover, it has been suggested that smell identification deficits are relatively specific to schizophrenia (Hurwitz et al., 1988) and its negative symptoms (Malaspina & Coleman, 2003), including in young people with psychotic disorders (Corcoran et al., 2005), which
