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Measuring anankastic personality traits.

J A Ramos Brieva1, A Cordero Villafáfila, M Navío Acosta

  • 1Psychiatric Service, Hospital Ramón y Cajal, Universidad de Alcalá de Henares, Madrid, Spain. jramosb.hrc@salud.madrid.org

Actas Espanolas De Psiquiatria
|March 23, 2006
PubMed
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The Mini-Inventory of Anankastic Personality Traits, 2nd version (MIAPT-2) is a validated 20-item scale for measuring obsessive personality traits. It demonstrates strong reliability and validity for use in clinical and general populations.

Area of Science:

  • Psychological assessment
  • Personality psychology
  • Clinical psychology

Background:

  • Anankastic (obsessive) personality traits are a focus in psychological research.
  • Existing scales require validation for accurate measurement.
  • The Mini-Inventory of Anankastic Personality Traits, 2nd version (MIAPT-2) was developed to address this need.

Purpose of the Study:

  • To validate the 20-item Mini-Inventory of Anankastic Personality Traits, 2nd version (MIAPT-2).
  • To assess the psychometric properties of the MIAPT-2, including validity and reliability.
  • To provide standardized scores for clinical and general population samples.

Main Methods:

  • A sample of 418 individuals from the general population was used for construct validity (factorial analysis), alpha reliability, and internal consistency analysis.

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  • Item-total correlations and the two-halves test were employed for internal consistency.
  • Concurrent validity and test-retest reliability were assessed using a separate sample of 22 medical students, with the Maudsley Obsessional-Compulsive Inventory as the external criterion.

    • Main Results:

    • The MIAPT-2 demonstrated good concurrent validity (r = 0.67) and construct validity, explaining 56% of the variance.
    • Internal consistency was high, supported by item-total correlations and the two-halves test (r = 0.71, corrected R = 0.83).
    • The scale exhibited high alpha reliability (alpha = 0.84) and test-retest reliability (r = 0.69).

    Conclusions:

    • The validated MIAPT-2 is a reliable and valid instrument for evaluating anankastic personality traits.
    • The scale is suitable for use in both clinical and general population samples.
    • Standardized scores and the scale itself are provided in an appendix for practical application.