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James Hartley
Many articles published in the International Journal of Clinical and Health Psychology describe the results obtained in studies that have used Likert-type scales. Such scales have advantages and disadvantages and in this article I comment on some of these. In particular I comment on the effects of using scales that start with the positive end and finish with the negative one, and on those that present high ratings on the left - as opposed to the right. I also consider that scores on negatively-worded items differ from those obtained on positively-worded ones and that it is not, therefore, appropriate to simply reverse the scores obtained on such items. Finally, I note that some items on these scales present more than one issue and it is hard to know whether when responding to these items, respondents are responding to all of the item or just one part.
