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Area of Science:

  • Psychometrics
  • Statistical Software Development

Background:

  • FACTOR is a widely-used, free software for factor analysis (FA).
  • Its development spans from 2006 to the present, evolving significantly over time.

Purpose of the Study:

  • To provide a conceptual overview of FACTOR's origins, evolution, and future.
  • To analyze its growth from a traditional FA program to a comprehensive structural equation modeling (SEM) and item response theory (IRT) tool.

Main Methods:

  • Historical review of FACTOR's development in distinct phases (2006-2012, 2013-2016).
  • Analysis of its current capabilities within SEM and IRT frameworks.
  • Discussion of anticipated future advancements.

Main Results:

  • FACTOR's current technical sophistication rivals commercial software.
  • It offers unique analytical options not found in other programs.

Conclusions:

  • FACTOR has achieved a high level of technical development, comparable to commercial alternatives.
  • Areas for improvement and future development are identified, alongside its community engagement.