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<p>The impostor phenomenon describes a maladaptive personality style marked by persistent self-doubt and fear of being exposed as a fraud despite evident success. Despite its global relevance, the construct’s cross-cultural measurement invariance has not yet been empirically established. This study assessed the measurement invariance of the Impostor-Profile 30 across six European countries (<i>N</i> = 2472; 60.0% female; <i>M</i><sub>age</sub> = 31.34, <i>SD</i> = 13.36), and standardized the instrument by deriving normative values. Multi-group confirmatory factor analyses supported partial scalar invariance across five countries (excluding Italy; CFI = 0.897, RMSEA = 0.060, SRMR = 0.090), strict invariance across genders (CFI = 0.932, RMSEA = 0.051, SRMR = 0.057), and metric invariance across age groups (CFI = 0.915, RMSEA = 0.055, SRMR = 0.070). Age-specific percentile ranks were derived to enable norm-based interpretation. These results confirm the cross-cultural equivalence of the IPP across five European countries, supporting its standardized use in psychological research and practice.</p>

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Cross-cultural validation and standardization of the Impostor-Profile 30

  • 期刊论文

  • 出版模式：

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  • 发表日期：

    2025年4月26日

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  • Fabio Ibrahim,
  • Elena Druică,
  • Fabio Musso,
  • Kristýna Krejčová,
  • Marina S. Sheveleva,
  • Philipp Yorck Herzberg,
  • Johannes Alfons Karl

摘要

The impostor phenomenon describes a maladaptive personality style marked by persistent self-doubt and fear of being exposed as a fraud despite evident success. Despite its global relevance, the construct’s cross-cultural measurement invariance has not yet been empirically established. This study assessed the measurement invariance of the Impostor-Profile 30 across six European countries (N = 2472; 60.0% female; Mage = 31.34, SD = 13.36), and standardized the instrument by deriving normative values. Multi-group confirmatory factor analyses supported partial scalar invariance across five countries (excluding Italy; CFI = 0.897, RMSEA = 0.060, SRMR = 0.090), strict invariance across genders (CFI = 0.932, RMSEA = 0.051, SRMR = 0.057), and metric invariance across age groups (CFI = 0.915, RMSEA = 0.055, SRMR = 0.070). Age-specific percentile ranks were derived to enable norm-based interpretation. These results confirm the cross-cultural equivalence of the IPP across five European countries, supporting its standardized use in psychological research and practice.