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Attachment theory offers a powerful theoretical framework for elucidating the developmental pathway through which childhood interpersonal trauma confers vulnerability to psychosis. In the present study, the association between attachment and schizotypy was explored in two independent non-clinical samples of Spanish (n=547) and American (n=1425) young adults. Participants completed the Relationship Questionnaire and the Wisconsin Schizotypy Scales. Following attachment theory and cognitive accounts of psychosis, it was hypothesized that preoccupied attachment would be associated with positive schizotypy, dismissing attachment with negative schizotypy, and fearful attachment with both schizotypy dimensions. Results confirmed these predictions, thus supporting the theoretical frameworks invoked. Also, the associations found in these non-clinical samples are consistent with those in clinical psychosis, supporting the continuum model of schizotypy and schizophrenia. Finally, there was cross-cultural consistency of these associations. Overall, the findings support the application of attachment theory for furthering our understanding of whether different insecure styles, characterized by different self and other representations and affect regulation strategies, play a role in the pathways to positive and negative symptoms., (© 2013 Elsevier Ireland Ltd. All rights reserved.)

Positive and negative schizotypy exhibit differential patterns of impairment in social relations, affect, and functioning in daily life. However, studies have not examined the association of schizotypy with real-world expression of psychotic-like, paranoid, and negative symptoms. The present study employed experience-sampling methodology (ESM) to assess positive and negative schizotypy in daily life in a nonclinical sample of 206 Spanish young adults. Participants were prompted randomly 8 times daily for 1 week to complete assessments of their current symptoms and experiences. Positive schizotypy was associated with psychotic-like and paranoid symptoms in daily life. Negative schizotypy was associated with a subset of these symptoms and with negative symptoms in daily life. Momentary stress was associated with psychotic-like and paranoid symptoms, but only for those high in positive schizotypy. Social stress predicted momentary psychotic-like symptoms in both positive and negative schizotypy. Time-lagged analyses indicated that stress at the preceding signal predicted psychotic-like symptoms at the current assessment, but only for individuals high in positive schizotypy. The results are consistent with models linking stress sensitivity with the experience of psychotic symptoms. The findings provide cross-cultural support for the multidimensional model of schizotypy and schizophrenia. Furthermore, the findings demonstrate that ESM is an effective method for predicting the experience of psychotic-like symptoms, as well as their precursors, in daily life., (PsycINFO Database Record (c) 2013 APA, all rights reserved.)

Background: Previous studies have provided mixed evidence in support of the structure of Bartholomew's attachment framework. The current study examined the comparability of the correlations among the attachment prototypes as well as the underlying factor structure of the Relationship Questionnaire in independent samples of Spanish and American young adults., Method: Participants were 547 students from the Universitat Autònoma de Barcelona and 1425 from the University of North Carolina at Greensboro who completed the Relationship Questionnaire., Results: Secure attachment was negatively correlated with fearful attachment, as was preoccupied attachment with dismissing attachment. The secure-fearful association in the American sample represented a medium effect size, whereas the remaining correlations represented small effect sizes. Except for the secure-fearful association, the correlations among prototypes were comparable in magnitude across samples. A principal components analysis yielded two factors that explained similar amounts of variance in the two samples. The pattern of loadings was relatively comparable in both samples; however, it was not entirely consistent with the theoretical model., Conclusions: The findings provided only partial support to the structure of the theoretical framework invoked. We discuss an alternative interpretation of the two factors, as well as further measurement considerations and directions for future research.