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Principal Component Analysis Factor Analysis

Purpose. Both are used to reduce the dimensionality of correlated measurementsCan be used in a purely exploratory fashion to investigate dimensionalityOr, can be used in a quasi-confirmatory fashion to investigate whether the empirical dimensionality is consistent with the expected or theoretical

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Principal Component Analysis Factor Analysis

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    1. Principal Component Analysis & Factor Analysis Psych 818 DeShon

    2. Purpose Both are used to reduce the dimensionality of correlated measurements Can be used in a purely exploratory fashion to investigate dimensionality Or, can be used in a quasi-confirmatory fashion to investigate whether the empirical dimensionality is consistent with the expected or theoretical dimensionality Conceptually, very different analyses Mathematically, there is substantial overlap

    3. Principal Component Analysis Principal component analysis is conceptually and mathematically less complex So, start here... First rule... Don't interpret components as factors or latent variables. Components are simply weighted composite variables They should be interpreted and called components or composites

    4. Principal Component Analysis

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