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Rotation Types in Exploratory Factor Analysis (EFA)

Rotation Types in Exploratory Factor Analysis 

Rotation causes factor loadings to be more clearly differentiated, which is often necessary to facilitate interpretation. Several types of rotation are available for your use.

Orthogonal

Varimax (most common)

  • minimizes number of variables with extreme loadings (high or low) on a factor
  • makes it possible to identify a variable with a factor

Quartimax

  • minimizes the number of factors needed to explain each variable
  • tends to generate a general factor on which most variables load with medium to high values
  • not very helpful for research

Equimax

  • combination of Varimax and Quartimax

Oblique

The variables are assessed for the unique relationship between each factor and the variables (removing relationships that are shared by multiple factors).

Direct oblimin (DO)

  • factors are allowed to be correlated
  • diminished interpretability

Promax (Use this one if you’re not sure)

  • computationally faster than DO
  • used for large datasets
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