<html><head><meta http-equiv="Content-Type" content="text/html charset=utf-8"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space;" class="">Dear Gordana,<div class=""><br class=""><div class=""> You might want to double check the book by Malvern et al. on VOCD, but I believe that the minimum value is set at 50 because results are unstable for smaller files. </div><div class=""> We plan to implement another measure of lexical diversity called MATTR (moving average TTR) that may be a bit better for your purposes. Once it is ready, I will post a note to ChiBolts about this.</div><div class=""> One general point. If all you care about is making within-group comparisons, then using small transcripts is not a huge problem. However, if you were to attempt to compare lexical diversity numbers from small transcripts of the type you are describing with those with large transcripts, then even VOCD would run into problems.</div><div class=""><br class=""></div><div class="">—Brian MacWhinney<br class=""><div><blockquote type="cite" class=""><div class="">On Jul 15, 2015, at 9:35 AM, Gordana Hrzica <<a href="mailto:gordana.hrzica@gmail.com" class="">gordana.hrzica@gmail.com</a>> wrote:</div><br class="Apple-interchange-newline"><div class=""><div dir="ltr" class="">Dear all,<div class=""><br class=""></div><div class="">I would like to have a measure of vocabulary diversity in number of transcripts of children's narratives. VOCD seems like the most reliable choice for that and I would really like to use it. However, narratives are rather small. Most of them is between 80 and 170 tokens, but some of them are lower than 50. I know that default minimum value for calculating VOCD is 50 tokens, but it can also be set lower. Also, I believe that using the option of replacements would give me some results. However, I do not know how reliable such results would be and which of the two mentioned methods should give me more appropriate measures.</div><div class=""><br class=""></div><div class="">I am sorry if I'm posting this to the wrong group. Perhaps it is more of a methodological than a technical question. I feel it it somewhere between two worlds:). But if it would be more appropriate for info-childes, I will place it there.</div><div class=""><br class=""></div><div class="">I would really appreciate your help on this one.</div></div><div class=""><br class="webkit-block-placeholder"></div>
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