Table 3.
Loadings from two separate PCA analyses, after varimax rotation. The first analysis (PCA_A) represented line bisection using the traditional measure of DBE. The second analysis (PCA_B) substituted the endpoint weightings indices, EWB and EWS. The major factor loading for each variable is shown in bold.
|
PCA_A with directional bisection error |
PCA_B with endpoint weightings indices |
|||
|---|---|---|---|---|
| Component 1 | Component 2 | Component 1 | Component 2 | |
| % variance | 60.0 | 20.9 | 57.6 | 17.4 |
| Eigenvalue | 2.4 | 0.8 | 2.9 | 0.9 |
| STARS | 0.85 | 0.31 | 0.80 | 0.44 |
| COPY | 0.84 | 0.23 | 0.74 | 0.44 |
| DRAW | 0.83 | −0.02 | 0.68 | 0.23 |
| DBE | 0.15 | 0.97 | – | – |
| EWB | – | – | 0.86 | −0.12 |
| EWS | – | – | −0.13 | −0.95 |