Faith Maturity Scale (FMS-38)

Introduction

The Faith Maturity Scale (FMS-38) is a self-report psychometric instrument developed to assess the maturity and integration of Christian faith into an individual’s beliefs, attitudes, and daily life. Originally introduced by Benson, Donahue, and Erickson as part of the National Study of Youth and Religion, the scale conceptualizes faith maturity as a multidimensional construct that encompasses both a personal relationship with God and a commitment to expressing faith through compassion, justice, and service to others. The FMS-38 is widely used in the psychology of religion, pastoral theology, spiritual formation, and congregational research.

Description

The FMS-38 consists of 38 items that assess two primary dimensions of faith maturity:

  • Vertical Faith: Personal relationship with God, prayer, trust, spiritual commitment, and religious beliefs.
  • Horizontal Faith: Expression of faith through love, compassion, social responsibility, forgiveness, service, and concern for others.

Items are typically rated using a Likert-type response scale, with higher scores indicating greater faith maturity and stronger integration of religious beliefs into everyday life.

Purpose

The FMS-38 is designed to:

  • Assess the maturity of Christian faith.
  • Evaluate the integration of spirituality into daily behavior.
  • Measure both personal and interpersonal expressions of faith.
  • Support research on religious development and spiritual formation.
  • Evaluate the effectiveness of faith-based educational and pastoral programs.

Administration

The questionnaire is self-administered and generally requires 10–15 minutes to complete. It is suitable for adolescents and adults and is widely used in churches, seminaries, educational institutions, pastoral counseling, and research settings.

Scoring

Each item is scored according to the selected Likert response. Scores are summed or averaged to produce:

  • Vertical Faith Score.
  • Horizontal Faith Score.
  • Overall Faith Maturity Score.

Higher scores indicate stronger spiritual commitment, deeper integration of Christian beliefs into everyday life, and greater consistency between faith and personal behavior.

Interpretation

Higher FMS-38 scores reflect a mature and well-integrated Christian faith characterized by both personal devotion and active concern for others. Individuals with elevated scores typically report stronger spiritual practices, greater religious commitment, ethical decision-making, and increased involvement in service and community life. Lower scores may indicate that faith plays a less central role in personal identity or daily functioning. Interpretation should consider denominational traditions, cultural context, and individual religious experiences.

Statistical Analysis

Psychometric evaluation of the FMS-38 commonly includes:

  • Descriptive statistics.
  • Internal consistency (Cronbach’s alpha).
  • McDonald’s Omega.
  • Test–retest reliability.
  • Exploratory and Confirmatory Factor Analysis (EFA/CFA).
  • Item-total correlations.
  • Convergent and discriminant validity.
  • Correlation and multiple regression analyses.
  • Structural Equation Modeling (SEM).
  • Measurement invariance across demographic and religious groups.
  • Group comparisons (t-test, ANOVA, MANOVA).

Research has consistently demonstrated good reliability and construct validity, supporting the two-factor structure representing Vertical and Horizontal Faith.

Applications

The FMS-38 is widely used in:

  • Psychology of religion.
  • Spiritual formation research.
  • Pastoral theology.
  • Christian education.
  • Congregational studies.
  • Counseling psychology.
  • Faith-based intervention research.
  • Religious development across the lifespan.

Advantages

  • Comprehensive assessment of faith maturity.
  • Evaluates both personal spirituality and social expression of faith.
  • Strong theoretical foundation in Christian faith development.
  • Appropriate for clinical, educational, pastoral, and research settings.
  • Well-established psychometric properties across diverse Christian populations.

Limitations

As a self-report instrument, the FMS-38 may be influenced by social desirability, personal interpretations of religious commitment, and denominational differences. The scale was developed primarily within Christian contexts; therefore, its applicability to other religious traditions may be limited without cultural or theological adaptation. Results should be interpreted alongside complementary measures of spirituality, religious commitment, and psychological well-being.

References

Benson, P. L., Donahue, M. J., & Erickson, J. A. (1993). The Faith Maturity Scale: Conceptualization, Measurement, and Empirical Validation.

Benson, P. L., Donahue, M. J., & Erickson, J. A. (1993). Faith Maturity and Its Relationship to Religious Commitment and Social Responsibility.

Hill, P. C., & Hood, R. W. (1999). Measures of Religiosity.

Fowler, J. W. (1981). Stages of Faith: The Psychology of Human Development and the Quest for Meaning.