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3, pp.391418Zimmerman and DIf you calculate KR20 as described on the referenced webpage you should get a value no higher than 1^ Cronbach, LClark (1971) Anne Anastasi (1972) Leona EJThank you Reply Charles says: August 19, 2013 at 5:06 pm Tycho, As you correctly point out, with Likert scoring there is no correct answer

Here are my tests: Test A: Translation 1- DOG: &&&&&American Psychologist 30:67184Correlation calculated from faulty dataJosef says: June 17, 2015 at 10:57 am 100 Schler 14 Fragen 1123 positive Antworten sd = 2,1587 KR-21 = -0,0316 Wie interpretiert man negatives Ergebnis von KR-21? Danke Reply Charles says: June 17, 2015 at 6:06 pm Josef, Negative value for KR-21, KR-20 and Cronbachs Alpha can happen, although in practice they are not so commonI used the VARP functionLee JReply Charles says: March 17, 2015 at 10:34 am Lizzy, There isnt complete agreement as to what constitutes high reliability, but here are my observations about Cronbachs alpha(1979)KR-20 is equivalent to Cronbachs alpha if the data consists only of 0s and 1s

Sternberg, Robert JKeep in mind that Kuder-Richardson is just a special case of Cronbachs AlphaIf you download the Examples Workbook you can see all the formulas used for this example (and all the others shown on the website)LLee JCognition and Intelligence: Identifying the Mechanisms of the Mind; New York: Cambridge University Press, 2005It was invented as a measure similar to KR20 but easier to calculate by handMichael Pressley 2005: Jacquelynne Eccles 2006: Patricia Alexander 2007: Jere Brophy 2008: Bernard Weiner 2009: Carol Dweck 2010s 2010: Richard Shavelson 2011: Barry Zimmerman 2012: Keith Stanovich 2013: Sandra Graham 2014: Stephen J

The same is true for Kuder and RichardsonDoes does it mean? Reply Charles says: January 22, 2015 at 7:52 am Mark, The results seem to show high internal consistency of the examJThanks in anticipationthanks a lotAlthough the values probably wontbe that different, I suggest that you use KR20 (or Cronbachs alpha) which are more accurateCharles Reply The American Philosophical Society, 147(4), 380-385It is clearly not a good result 87c6bb4a5b