Top

Journal of Psychopathology and Behavioral Assessment

Gepubliceerd in:

01-12-2011

Psychometric Properties of the Wisconsin Schizotypy Scales in an Undergraduate Sample: Classical Test Theory, Item Response Theory, and Differential Item Functioning

Auteurs: Beate P. Winterstein, Terry A. Ackerman, Paul J. Silvia, Thomas R. Kwapil

Gepubliceerd in: Journal of Psychopathology and Behavioral Assessment | Uitgave 4/2011

Abstract

The Wisconsin Schizotypy Scales are widely used for assessing schizotypy in nonclinical and clinical samples. However, they were developed using classical test theory (CTT) and have not had their psychometric properties examined with more sophisticated measurement models. The present study employed item response theory (IRT) as well as traditional CTT to examine psychometric properties of four of the schizotypy scales on the item and scale level, using a large sample of undergraduate students (n = 6,137). In addition, we investigated differential item functioning (DIF) for sex and ethnicity. The analyses revealed many strengths of the four scales, but some items had low discrimination values and many items had high DIF. The results offer useful guidance for applied users and for future development of these scales.

vorige artikel Psychometric Properties and Administration Measurement Invariance of Social Phobia Symptom Measures: Paper-Pencil vs. Internet Administrations

volgende artikel Test of a Factor Mixture-Based Taxonic-Dimensional Model of Anxiety Sensitivity and Panic Attack Vulnerability among University and Clinical Samples in Mexico City

American Educational Research Association, American Psychological Association, & National Council on Measurement in Education. (1999). Standards for educational and psychological testing. Washington: AERA.

Barrantes-Vidal, N., Lewandowski, K. E., & Kwapil, T. R. (2010). Psychopathology, social adjustment and personality correlates of schizotypy clusters in a large nonclinical sample. Schizophrenia Research, 122, 219–225.PubMedCrossRef

Barrantes-Vidal, N., Ros-Morente, A., & Kwapil, T. R. (2009). An examination of neuroticism as a moderating factor in the association of positive and negative schizotypy with psychopathology in a nonclinical sample. Schizophrenia Research, 115, 303–309.PubMedCrossRef

Chapman, L. J., Chapman, J. P., Kwapil, T. R., Eckblad, M., & Zinser, M. C. (1994). Putatively psychosis-prone subjects 10 years later. Journal of Abnormal Psychology, 103, 171–183.PubMedCrossRef

Chapman, L. J., Chapman, J. P., & Raulin, M. L. (1976). Scales for physical and social Anhedonia. Journal of Abnormal Psychology, 85, 374–382.PubMedCrossRef

Chapman, L. J., Chapman, J. P., & Raulin, M. L. (1978). Body image aberration in schizophrenia. Journal of Abnormal Psychology, 87, 399–407.PubMedCrossRef

Chmielewski, P. M., Fernandes, L. O. L., Yee, C. M., & Miller, G. A. (1995). Ethnicity and gender in scales of psychosis proneness and mood disorders. Journal of Abnormal Psychology, 104, 464–470.PubMedCrossRef

Claridge, G., McCreery, C., Mason, O., Bentall, R., Boyle, G., Slade, P., et al. (1996). The factor structure of “schizotypal” traits: a large replication study. British Journal of Clinical Psychology, 35, 103–115.PubMedCrossRef

DeVellis, R. F. (2012). Scale development: Theory and applications (3rd ed.). Los Angeles: Sage.

Eckblad, M., & Chapman, L. J. (1983). Magical Ideation as an indicator of schizotypy. Journal of Consulting and Clinical Psychology, 51, 215–225.PubMedCrossRef

Eckblad, M., Chapman, L. J., Chapman, J. P., & Mishlove, M. (1982). The revised social Anhedonia scale. Unpublished test (copies available from T. R. Kwapil, Department of Psychology, University of North Carolina at Greensboro, P.O. Box 26170 Greensboro, NC 27402–6170).

Gooding, D. C., Tallent, K. A., & Matts, C. W. (2005). Clinical status of at-risk individuals 5 years later: further validation of the psychometric high-risk strategy. Journal of Abnormal Psychology, 114, 170–175.PubMedCrossRef

Gooding, D. C., Tallent, K. A., & Matts, C. W. (2007). Rates of avoidant, schizotypal, schizoid and paranoid personality disorders in psychometric high-risk groups at 5-year follow-up. Schizophrenia Research, 94, 373–374.PubMedCrossRef

Graves, R. E., & Weinstein, S. (2004). A rasch analysis of three of the Wisconsin scales of psychosis proneness: measurement of schizotypy. Journal of Applied Measurement, 5, 160–171.PubMed

Jackson, D. N. (1970). A sequential system for personality scale development. In C. D. Spielberger (Ed.), Current topics in clinical and community psychology (Vol. 2, pp. 61–96). San Diego: Academic.

Kaczorowski, J. A., Barrantes-Vidal, N., & Kwapil, T. R. (2009). Neurological soft signs in psychometrically identified schizotypy. Schizophrenia Research, 115, 293–302.PubMedCrossRef

Kwapil, T. R. (1998). Social Anhedonia as a predictor of the development of schizophrenia-spectrum disorders. Journal of Abnormal Psychology, 107, 558–565.PubMedCrossRef

Kwapil, T. R., Barrantes-Vidal, N., & Silvia, P. J. (2008). The dimensional structure of the Wisconsin Schizotypy Scales: factor identification and construct validity. Schizophrenia Bulletin, 34, 444–457.PubMedCrossRef

Kwapil, T. R., Crump, R. A., & Pickup, D. R. (2002). Assessment of psychosis proneness in African-American college students. Journal of Clinical Psychology, 58, 1601–1614.PubMedCrossRef

Mason, O., Claridge, G., & Jackson, M. (1995). New scales for the assessment of schizotypy. Personality and Individual Differences, 18, 7–13.CrossRef

Meehl, P. E. (1990). Toward an integrated theory of schizotaxia, schizotypy, and schizophrenia. Journal of Personality Disorders, 4, 1–99.CrossRef

Raine, A. (1991). The SPQ: a scale for the assessment of schizotypal personality based on DSM-III-R criteria. Schizophrenia Bulletin, 17, 555–564.PubMed

Reise, S. P. (1990). A comparison of item-and person-fit methods of assessing model-data fit in IRT. Applied Psychological Measurement, 14, 127–137.CrossRef

Roussos, L. A., & Stout, W. F. (1996). Simulation studies of the effects of small sample size and studied item parameters on SIBTEST and Mantel-Haenszel type I error performances. Journal of Educational Measurement, 33, 215–230.CrossRef

Silvia, P. J., & Kwapil, T. R. (2010). Aberrant asociality: How individual differences in social Anhedonia illuminate the need to belong. Journal of Personality. doi:10.1111/j.1467-6494.2010.00702.x

Stout, W., & Roussos, L. (1999). Dimensionality-based DIF/DBF package [Computer program]. Champaign-Urbana: William Stout Institute for Measurement, University of Illinois.

Winterstein, B. P., Willse, J. T., Kwapil, T. R., & Silvia, P. J. (2010). Assessment of score dependability of the Wisconsin Schizotypy Scales using generalizability analysis. Journal of Psychopathology and Behavioral Assessment, 32, 575–585.CrossRef

Zimowski, M., Muraki, E., Mislevy, R. J., & Bock, R. D. (2003). BILOG-MG 3: Item analysis and test scoring with binary logistic models. Chicago: Scientific Software International.

Titel: Psychometric Properties of the Wisconsin Schizotypy Scales in an Undergraduate Sample: Classical Test Theory, Item Response Theory, and Differential Item Functioning
Auteurs: Beate P. Winterstein
Terry A. Ackerman
Paul J. Silvia
Thomas R. Kwapil
Publicatiedatum: 01-12-2011
Uitgeverij: Springer US
Gepubliceerd in: Journal of Psychopathology and Behavioral Assessment / Uitgave 4/2011
Print ISSN: 0882-2689
Elektronisch ISSN: 1573-3505
DOI: https://doi.org/10.1007/s10862-011-9242-9

Bohn Stafleu van Loghum

Deel dit onderdeel of sectie (kopieer de link)

Abstract

Log in om toegang te krijgen

Andere artikelen Uitgave 4/2011

Factor Structure Validation of the Alcohol Dependence Scale in a Heavy Drinking College Sample

Test of a Factor Mixture-Based Taxonic-Dimensional Model of Anxiety Sensitivity and Panic Attack Vulnerability among University and Clinical Samples in Mexico City

Individuals with Fear of Blushing Explicitly and Automatically Associate Blushing with Social Costs

Searching for Specificity Between Cognitive Vulnerabilities and Mood and Anxiety Symptoms

A Comparison of Multidimensional Health Profiles across Three Trauma-Exposed Diagnostic Groups

An Exploratory and Confirmatory Factor Analysis of the Affective Control Scale in an Undergraduate Sample