Harman: Harman's Eight Physical Variables

In GPArotation: Gradient Projection Factor Rotation

Harman's Eight Physical Variables

Description

Unrotated factor loading matrix extracted by the centroid method for Harman's 8 physical variables, a classic dataset in factor analysis.

Usage

  data(Harman)

Format

Harman8: a 8 \times 2 numeric matrix of unrotated centroid factor loadings. Row names are variable names; column names are CF1 and CF2.

Details

Harman8 is a 8 \times 2 matrix of unrotated factor loadings extracted by the centroid method (Table 14.3 in Harman, 1976) from the correlation matrix of 8 physical measurements taken on 305 girls (Table 2.3 in Harman, 1976). The centroid method was a standard extraction procedure before iterative methods became computationally feasible. The two columns represent unrotated centroid factors (CF1 and CF2). Row names are the 8 variable names.

The covariance matrix for these 8 physical variables is available in base R (see Harman23.cor).

Source

Harman, H.H. (1976). Modern Factor Analysis (3rd ed.). University of Chicago Press.

See Also

Harman23.cor, GPForth, rotations, Thurstone, WansbeekMeijer, CCAI

Examples

  data(Harman, package = "GPArotation")

  # Centroid unrotated loadings from Harman (1976) Table 14.3
  print(Harman8)

  # Rotate the centroid solution
  quartimax(Harman8)
  oblimin(Harman8, randomStarts = 100)

GPArotation documentation built on April 29, 2026, 9:08 a.m.