Many support the two-factor structure but there are others that suggest a three or four factor structure.

Most but not all studies have found broadly similar factor structure for men and women.

Such a factor structure is usually not helpful to the research purpose.

This factor structure has been debated, but has generated much research in wellbeing, health and successful aging.

The factor structure was also similar, though, as might be expected from their exposure to different schemes (mandatory and voluntary), not exactly so.

The five factor structure has been replicated in peer reports.

The factor structure of the system usability scale.

The factor structure of 'schizotypal' traits: A large replication study.

Erbes et al. considered the independence of factor structures as a third consideration for evaluating outcome measures.

Risky asset returns are said to follow a factor structure if they can be expressed as: