[Validation study of the implicit theories of intelligence scale]

Area of Science:

• Psychology
• Educational Psychology
• Psychometrics

Background:

• Beliefs about intelligence significantly impact learning behaviors.
• Implicit theories of intelligence, entity (fixed) and incremental (malleable), shape interpretations of academic situations.
• Existing measurement tools for implicit theories of intelligence lack a French-language version.

Purpose of the Study:

• To develop and validate the Implicit Theories Of Intelligence scale (TIDI) for French teenagers.
• To assess the factorial validity and internal consistency of the TIDI.
• To examine the temporal stability of the TIDI.

Main Methods:

• Development of the TIDI, comprising two three-item subscales for incremental and entity theories of intelligence.
• Study 1: Factorial validity and internal consistency assessed in 453 French teenagers (ages 11-16).
• Study 2: Temporal stability assessed in 209 French teenagers over a three-month period.

Main Results:

• The TIDI demonstrated excellent internal consistency (Cronbach's alpha 0.81 for incremental, 0.78 for entity theory) and good factorial validity.
• Confirmatory factor analysis supported the proposed two-factor structure with strong item loadings.
• The scale exhibited good temporal stability, with correlation coefficients of 0.70 for incremental and 0.74 for entity theory.

Conclusions:

• The TIDI is a psychometrically sound instrument for measuring implicit theories of intelligence in French teenagers.
• Teenagers can simultaneously hold both entity and incremental theories of intelligence, with one potentially being dominant.
• The TIDI can be utilized in correlational studies and for interventions with children experiencing learning difficulties.