Abstract
Wood and McCarthy (1984) found a 'misallocation of variance' when applying PCA, including Varimax rotation, to simulated data. Here it is demonstrated that this effect can be produced by Varimax rotation, without PCA as an intervening step. PCA does not distort or lose information when extracting components, since it is shown that the prototypes may be perfectly reconstructed from the unrotated solution. However, it is stressed that infinitely many sets of prototypes may render the same final solution, a fact which cannot be overcome by any method. The role of the rotation step within this framework is discussed.
| Original language | English |
|---|---|
| Journal | Electroencephalography and Clinical Neurophysiology/ Evoked Potentials |
| Volume | 65 |
| Issue number | 5 |
| Pages (from-to) | 393-398 |
| Number of pages | 6 |
| ISSN | 0168-5597 |
| DOIs | |
| Publication status | Published - 01.01.1986 |
Funding
This work was made possible by financial support from the DeutscheF orschungsgemeinschaft (SFB 116, SFB 307). We thank Theo Gasser, Christel Jennen-Steinmetz, and Dieter Schellberg for their helpful comments.
Research Areas and Centers
- Academic Focus: Center for Brain, Behavior and Metabolism (CBBM)
