Abstract:
:Sparse evidence of a co-aggregation of the risk of schizophrenia and bipolar disorder provides support for a shared but nonspecific genetic etiology of bipolar disorder and schizophrenia. Temperaments are conceptualized as trait sub-syndromic conditions of major pathologies. This study set out to test the hypothesis of a continuum between schizotypy and affective temperaments versus the alternative hypothesis of their independence based on a cross-sectional, survey design involving 649 (males: 47%) college students. The short 39-item TEMPS-A and the SPQ were used as measures of the affective temperaments and of schizotypy, respectively. Confirmatory factor analyses were applied to a unidimensional model, to a standard correlate traits model, to second-order representations of a common latent structure, and to a bifactor model. Confirmatory bifactor modeling provided evidence against a complete independence of the dimensions subsumed by the affective and the schizotypal traits. The best solution distinguished between two sub-domains grouping positive symptoms and negative symptoms as measured by the SPQ subscales, and a sub-domain related to the affective temperaments as measured by the TEMPS-A. Limitations due to the use of subscales from two different tools should be taken into account.
journal_name
Psychiatry Resjournal_title
Psychiatry researchauthors
Preti A,Corrias I,Gabbrielli M,Lai V,Muratore T,Pintus E,Pintus M,Sanna S,Scanu R,Tronci D,Vellante M,Siddi S,Petretto DR,Carta MGdoi
10.1016/j.psychres.2014.10.027subject
Has Abstractpub_date
2015-01-30 00:00:00pages
145-156issue
1-2eissn
0165-1781issn
1872-7123pii
S0165-1781(14)00860-9journal_volume
225pub_type
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