Exploring Multiple Solutions
Not all scales have a theoretically clear factor structure at the onset of EFA. In addition, sometimes the extraction criteria contradict the proposed structure. In these cases, we need to explore multiple solutions. The GDS data fit this mold. After we reviewed the extraction criteria in Chapter 3, four different factor solutions were proposed: a one-factor, a three-factor, a five-factor, and an eight-factor solution. As a result, we are going to have to experiment and explore more than in previous examples. Let us remember that we want to favor parsimonious solutions. Also, because all proposed subscales relate to depression in some way, they should be correlated. We will therefore use an oblique rotation (direct ...
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