English, Article edition: DELTA: Stata module to compute the Delta index of scale discrimination Jean-Benoit Hardouin

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  • code
Language
  • English

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Title
  • DELTA: Stata module to compute the Delta index of scale discrimination
Author
  • Jean-Benoit Hardouin
Physical Description
  • code
Notes
  • delta computes the generalized delta index of scale discrimination developed by Hankins (2007) based on the original work of Ferguson (1949). This index measures the scale's ability to distinguish between individuals. A value of 1 indicates that the test has maximal discrimination (all possible scores occur with the same frequency) and a value of 0 means that the test has minimal discrimination (all the respondents have the same score). A value of 0.9 results from a set of scores that is normally distributed. A value of 1 is observed if the scores follow a uniform distribution. Individuals with a missing score are omitted.
  • delta index, psychometrics, Cronbach alpha, discrimination
  • RePEc:boc:bocode:s456851
Language
  • English
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