Brian,<br><br>Thanks so much. Those are very helpful solutions. Our ultimate goal was to find a corpus where we could compare children with older siblings to those without on a number of different measures (sentence complexity, unique words used, etc) rather than looking at sibling interactions themselves. I'll poke around in the file headers and see what I can find. <br><br>I assumed we'd eventually have to tweak the research question as we saw what information was available. It's a student's senior thesis, so while we're limited on time and resources, we do have a great deal of flexibility in the ultimate research question. It would be possible for my student to collect a small dataset of CDI responses for only children and those with siblings, but I wanted to help her gain some experience working with transcriptions of utterances as well as the CDI. <br><br>Thanks again for your help,<br>Jessica<br><br><br>On Monday, October 1, 2012 11:52:09 PM UTC-4, Brian MacWhinney wrote:<blockquote class="gmail_quote" style="margin: 0;margin-left: 0.8ex;border-left: 1px #ccc solid;padding-left: 1ex;"><div style="word-wrap:break-word">Dear Jessica,<div><br><div> Unfortunately, researchers often do not systematically address this issue. For example, in the New England corpus, the children came into the lab, so information about siblings seemed less important . However, the Hall corpus was done in the home and at school and there are siblings around and their ages are recorded. For the smaller case studies, older child output is often available. For example, in the MacWhinney corpus, Ross is nearly always talking with his younger brother Mark. The Ervin-Tripp data, which are still being put into CHAT have families with older siblings present. And there are even some corpora, such as the Conti-Ramsden ones where data comes from both a child with SLI and the sibling, but in separate files. If you work with a given transcript, often you will find that information encoded in the header line of the file itself. Basically, there is some information on this, but it is not very systematic. </div><div> If your interest is basically in the role of older siblings, why not just go through to spot transcripts in which older siblings are present and work with those?</div><div> Perhaps some other readers will have further suggestions.</div><div><br></div><div>-Brian MacWhinney</div><div><br><div><div>On Oct 1, 2012, at 11:22 PM, "J.Alexander" <<a href="javascript:" target="_blank" gdf-obfuscated-mailto="RNX7I5dH5ukJ">duk...@gmail.com</a>> wrote:</div><br><blockquote type="cite">Hi all,<br><br>I'm currently mentoring an undergraduate student who is interested in the role of older siblings in early language development. I typically work with adults, so the CHILDES databases seemed like a potential way to help her get some experience working with child language data given limited time and resources. I'm new to using the CHILDES databases, so I may have overlooked this information, but is family/demographic information easily available for any of the children in the larger sample databases (such as the New England, Rollins, Davis, or HSLLD)?<br><br>Thanks for your help,<br>Jessica Alexander<br><br>Assistant Professor of Psychology<br>Concord University<br><div><br></div>
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