Research JosephwhitfieldMDX 21:16, March 14, 2011 (UTC)
A Likert item is simply a statement which the respondent is asked to evaluate according to any kind of subjective or objective criteria; generally the level of agreement or disagreement is measured. Often five ordered response levels are used, although many psychometricians advocate using seven or nine levels; a recent empirical study found that a 5- or 7- point scale may produce slightly higher mean scores relative to the highest possible attainable score, compared to those produced from a 10-point scale, and this difference was statistically significant. In terms of the other data characteristics, there was very little difference among the scale formats in terms of variation about the mean, skewness or kurtosis.
The format of a typical five-level Likert item is:
- Strongly disagree
- Neither agree nor disagree Agree
- Strongly agree
other format: ( very effective) (effective) (somewhat effective) (not effective) (very not effective)