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Rasch analysis of the Frost Multidimensional Perfectionism Scale.

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Title: Rasch analysis of the Frost Multidimensional Perfectionism Scale.
Authors: Mitchell‐Parker, Kate, Medvedev, Oleg N., Krägeloh, Christian U., Siegert, Richard J.
Source: Australian Journal of Psychology. Sep2018, Vol. 70 Issue 3, p258-268. 11p.
Subjects: Perfectionism (Personality trait), Multidimensional Perfectionism Scale (Personality test), Psychometrics, Rasch models, Item response theory
Abstract: Abstract: Objective: The Frost Multidimensional Perfectionism Scale (FMPS) is widely used to measure the construct of perfectionism. Previous studies evaluating the factor structure of the FMPS have reported inconsistent findings. The study objective was to examine the psychometric properties of proposed four, five, and six factor solutions of the FMPS using Rasch analysis. Method: Using the responses from a sample of New Zealand athletes and exercisers (n = 425) from a variety of sports, we subjected the dataset to Rasch analysis. The overall and individual item fit, unidimensionality, local independence, and person separation reliability were evaluated by treating factors of each model as subtests. Results: After disordered thresholds were uniformly rescored, the factor Organisation displayed significant misfit to the model across all three solutions tested. Removal of Organisation and combining two parental facets into one resulted in adequate model fit and good item discrimination ability for all three solutions. The modified six‐factor model was the best in terms of reliability, with no differential item functioning and the highest person separation index. Conclusion: The present results support the psychometric properties and internal structural validity of the rescored FMPS with the parental factors combined and without the Organisation facet. Psychometric properties of the instrument can be further enhanced by using the ordinal‐to‐interval conversion table presented here, which does not require modification of the original response format. These findings will be of interest in different areas where accurate assessment of the overall perfectionism trait is important and open new avenues for perfectionism research. [ABSTRACT FROM AUTHOR]
Copyright of Australian Journal of Psychology is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
Database: Psychology and Behavioral Sciences Collection
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  Data: Rasch analysis of the Frost Multidimensional Perfectionism Scale.
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  Data: <searchLink fieldCode="AR" term="%22Mitchell‐Parker%2C+Kate%22">Mitchell‐Parker, Kate</searchLink><br /><searchLink fieldCode="AR" term="%22Medvedev%2C+Oleg+N%2E%22">Medvedev, Oleg N.</searchLink><br /><searchLink fieldCode="AR" term="%22Krägeloh%2C+Christian+U%2E%22">Krägeloh, Christian U.</searchLink><br /><searchLink fieldCode="AR" term="%22Siegert%2C+Richard+J%2E%22">Siegert, Richard J.</searchLink>
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  Data: <searchLink fieldCode="JN" term="%22Australian+Journal+of+Psychology%22">Australian Journal of Psychology</searchLink>. Sep2018, Vol. 70 Issue 3, p258-268. 11p.
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  Data: <searchLink fieldCode="DE" term="%22Perfectionism+%28Personality+trait%29%22">Perfectionism (Personality trait)</searchLink><br /><searchLink fieldCode="DE" term="%22Multidimensional+Perfectionism+Scale+%28Personality+test%29%22">Multidimensional Perfectionism Scale (Personality test)</searchLink><br /><searchLink fieldCode="DE" term="%22Psychometrics%22">Psychometrics</searchLink><br /><searchLink fieldCode="DE" term="%22Rasch+models%22">Rasch models</searchLink><br /><searchLink fieldCode="DE" term="%22Item+response+theory%22">Item response theory</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: Abstract: Objective: The Frost Multidimensional Perfectionism Scale (FMPS) is widely used to measure the construct of perfectionism. Previous studies evaluating the factor structure of the FMPS have reported inconsistent findings. The study objective was to examine the psychometric properties of proposed four, five, and six factor solutions of the FMPS using Rasch analysis. Method: Using the responses from a sample of New Zealand athletes and exercisers (n = 425) from a variety of sports, we subjected the dataset to Rasch analysis. The overall and individual item fit, unidimensionality, local independence, and person separation reliability were evaluated by treating factors of each model as subtests. Results: After disordered thresholds were uniformly rescored, the factor Organisation displayed significant misfit to the model across all three solutions tested. Removal of Organisation and combining two parental facets into one resulted in adequate model fit and good item discrimination ability for all three solutions. The modified six‐factor model was the best in terms of reliability, with no differential item functioning and the highest person separation index. Conclusion: The present results support the psychometric properties and internal structural validity of the rescored FMPS with the parental factors combined and without the Organisation facet. Psychometric properties of the instrument can be further enhanced by using the ordinal‐to‐interval conversion table presented here, which does not require modification of the original response format. These findings will be of interest in different areas where accurate assessment of the overall perfectionism trait is important and open new avenues for perfectionism research. [ABSTRACT FROM AUTHOR]
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  Data: <i>Copyright of Australian Journal of Psychology is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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        Value: 10.1111/ajpy.12192
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      – Code: eng
        Text: English
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      – SubjectFull: Multidimensional Perfectionism Scale (Personality test)
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      – SubjectFull: Psychometrics
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              Text: Sep2018
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