Social Anhedonia and Schizotypy in a Community Sample: The Maryland Longitudinal Study of Schizotypy

Revisiting the blurry boundaries of schizophrenia: Spectrum disorders in psychometrically identified schizotypes

“…Thus, the presence of schizotypy can be used as an indicator of increase liability to SRIs. For example, the Maryland Longitudinal Study of Schizotypy (Blanchard et al, 2011) demonstrated that a community sample of individuals who reported social anhedonia had a greater number of schizophrenia-spectrum personality disorder characteristics, greater negative symptom characteristics, and lower global functioning than a healthy comparison sample. This finding serves to underscore the utility of schizotypy measurement as an indicator of schizophrenia related pathology.…”

The interactive effects of negative symptoms and social role functioning on suicide ideation in individuals with schizophrenia

“…Social anhedonia is a core negative symptom of schizophrenia (Blanchard et al, 2011; Horan et al, 2006) that it is consistently elevated in clinical samples (Blanchard et al, 1998) and is stable across time and psychiatric symptom status (Blanchard et al, 2001). Importantly, Kring et al (2013) found that individuals with experiential deficits in motivation and pleasure were less likely to endorse a desire for close relationships and social engagement.…”

Psychotic-like symptoms and positive schizotypy are associated with mixed and ambiguous handedness in an adolescent community sample

“…The nonclinical psychosis phenotype (i.e., psychosis-proneness) is observed and reliably measured at the level of schizotypic personality features (using trait-like measures) and psychotic-like experiences (using symptom-based measures; Kwapil et al, 1999, Stefanis et al, 2002and BarrantesVidal et al, 2010. A substantial body of work has demonstrated that psychometrically assessed schizotypy is associated cross-sectionally with laboratory, interview, cognitive, and biobehavioral measures of schizophrenic symptoms and impairment (Claridge, 1997;Raine, 2006;Blanchard et al, 2011;Kwapil et al, 2012). Furthermore, longitudinal research indicates that psychometric schizotypy is associated with the development of psychosis and schizophreniaspectrum disorders (e.g., Chapman et al, 1994;Gooding et al, 2005) with effect sizes as large as or larger than in studies of consanguinity.…”