Fwd: Principal Components Analysis (PCA) vs Factor Analysis using SPSS

[Roman Ortuno]

 Dear All,

Could someone explain me the practical difference between Principal
Compoents Analyisis (PCA) vs. Factor Analyisis (FA) when using SPSS (16.0)?
Does the difference have to do with the extraction method used? (i.e.
Principal components, vs. others?).

Also, what are the dangers of including dichotomous variables in PCA/FA and
are there any examples published studies where this was done?

Many thanks in advance for your help,

Roman Romero-Ortuno
PhD student, TCD