Unidimensionality and bandwidth in the Center for Epidemiologic Studies Depression (CES-D) Scale.

@article{Stansbury2006UnidimensionalityAB,
  title={Unidimensionality and bandwidth in the Center for Epidemiologic Studies Depression (CES-D) Scale.},
  author={James P Stansbury and L. Douglas Ried and Craig A Velozo},
  journal={Journal of personality assessment},
  year={2006},
  volume={86 1},
  pages={10-22}
}
In this study, we compared classical test theory (CTT) and item response theory (IRT) approaches in analyzing the Center for Epidemiological Studies Depression (CES-D) Scale (Radloff, 1977). Standard item analyses, as well as Rasch (1960) analyses, both revealed item departures from unidimensionality in a sample of 2,455 older persons responding to the CES-D. Positive affect items in the scale performed poorly overall, their removal reducing the scale's bandwidth only slightly. Modeling… CONTINUE READING

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