| A degeneracy in Factor Analysis |
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| • | We can always
make an equivalent model by |
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| applying a
rotation to the factors and then |
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| applying the
inverse rotation to the factor loading |
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| matrix. |
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| – | The
data does not prefer any particular |
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| orientation
of the factors. |
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| • | This is a
problem if we want to discover the true |
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| causal factors. |
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| – | Psychologists
wanted to use scores on |
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| intelligence
tests to find the independent |
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| factors
of intelligence. |
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