WITHDRAWN: Effects of text length on lexical diversity measures: Using short texts with less than 200 tokens

The publisher regrets sincerely that an error in its production office resulted in the below article appearing in this issue twice. To remedy this error, pages 522-532 from this issue have been retracted., http://dx.doi.org/10.1016/j.system.2012.10.017. The duplicate article has therefore been withdrawn.As a consequence, pages 522-532 related to the duplicate article are missing from the printed issue. The publisher apologizes for any inconvenience this may cause.