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<body class='hmmessage'><div dir='ltr'>Dear Amber, <div><br></div><div>A study by McCarthy & Jarvis (2007) found that VOCD performs reasonably well in the 100 to 400 tokens (correlation coefficient with tokens, r=.22). I haven't checked that source in a while, but perhaps it has more information about smaller samples.</div><div><br></div><div>The source is:</div><div><br></div><div><p class="MsoNormal" style="margin: 0in 0in 0.0001pt 0.5in; text-align: justify; text-indent: -0.5in;"><span lang="EN-GB">McCarthy, P. M., & Jarvis, S. (2007). Vocd: A
theoretical and empirical evaluation. <i>Language
Testing, 24</i>(4), 459-488.<o:p></o:p></span></p><p class="MsoNormal" style="margin: 0in 0in 0.0001pt 0.5in; text-align: justify; text-indent: -0.5in;"><span lang="EN-GB"><br></span></p><p class="MsoNormal" style="margin: 0in 0in 0.0001pt 0.5in; text-align: justify; text-indent: -0.5in;"><span lang="EN-GB">Good luck!</span></p><p class="MsoNormal" style="margin: 0in 0in 0.0001pt 0.5in; text-align: justify; text-indent: -0.5in;"><span lang="EN-GB"><br></span></p><p class="MsoNormal" style="margin: 0in 0in 0.0001pt 0.5in; text-align: justify; text-indent: -0.5in;"><span lang="EN-GB">Gaby Silva</span></p><br><p style="color: rgb(34, 34, 34); font-family: arial, sans-serif; margin: 0cm 0cm 0.0001pt 4.65pt; font-size: 12.7272720336914px; background-color: rgb(255, 255, 255);"><font color="#c27ba0">Dra. Gabriela Silva Maceda</font></p><p style="color: rgb(34, 34, 34); font-family: arial, sans-serif; margin: 0cm 0cm 0.0001pt 4.65pt; font-size: 12.7272720336914px; background-color: rgb(255, 255, 255);"><font color="#c27ba0">Profesor-Investigador</font></p><p style="color: rgb(34, 34, 34); font-family: arial, sans-serif; margin: 0cm 0cm 0.0001pt 4.65pt; font-size: 12.7272720336914px; background-color: rgb(255, 255, 255);"><font color="#c27ba0">Facultad de Psicología, UASLP.</font></p><p style="color: rgb(34, 34, 34); font-family: arial, sans-serif; margin: 0cm 0cm 0.0001pt 4.65pt; font-size: 12.7272720336914px; background-color: rgb(255, 255, 255);"><font color="#c27ba0">Carretera Central Km. 424.5</font></p><p style="color: rgb(34, 34, 34); font-family: arial, sans-serif; margin: 0cm 0cm 0.0001pt 4.65pt; font-size: 12.7272720336914px; background-color: rgb(255, 255, 255);"><font color="#c27ba0">San Luis Potosí, S.L.P., 78494</font></p><p style="color: rgb(34, 34, 34); font-family: arial, sans-serif; margin: 0cm 0cm 0.0001pt 4.65pt; font-size: 12.7272720336914px; background-color: rgb(255, 255, 255);"><font color="#c27ba0">México</font></p><p style="color: rgb(34, 34, 34); font-family: arial, sans-serif; margin: 0cm 0cm 0.0001pt 4.65pt; font-size: 12.7272720336914px; background-color: rgb(255, 255, 255);"><font color="#c27ba0">Tel. +52 (444)832-1000 Ext. 9358</font></p><br><div><hr id="stopSpelling">Date: Wed, 19 Aug 2015 07:46:58 -0700<br>From: ambalashes@gmail.com<br>To: chibolts@googlegroups.com<br>Subject: Re: VOCD manual<br><br><div dir="ltr">In fact, perhaps I should just post my question on here. The CHAT manual talks about calculating D and states that it can be done on samples as small as 50 tokens. However, reliability is less good for small samples. Could anyone advise me on whether VOCD is still a more valid measure than TTR, even for small transcripts (e.g., during a shared-book reading session)? I assume that as long as the sample is large enough for KIDEVAL to be able to give me VOCD values then it is OK?<br>Thanks<br>Amber<br><br>On Wednesday, 19 August 2015 15:36:05 UTC+1, Amber wrote:<blockquote class="ecxgmail_quote" style="border-left:1px #ccc solid;padding-left:1ex;"><div dir="ltr">Dear all<br><br>The CLAN manual contains the following link, which no longer appears to work. <br><br><a href="http://childes.psy.cmu.edu/manuals/vocd.doc" target="_blank" rel="nofollow">http://childes.psy.cmu.edu/<wbr>manuals/vocd.doc</a><br><br>Is there a new link to the VOCD manual/another similar article? <br><br>Many thanks<br>Amber<br><br></div></blockquote></div>
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