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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calisto MT","serif";color:#44546A">This article lends credence to my hunch that ILL data has limited validity as indicator of future use. First, you need to look at the age of the items requested
at the time of the requests – are they requesting older articles or the latest articles? Secondly, you need to examine trends in usage over time – has there been a steady direction of the number of requests? Finally, examine the number of individuals making
these requests. Do all of the requests for this title come from 1 or 2 people?<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calisto MT","serif";color:#44546A"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calisto MT","serif";color:#44546A">I have not looked in the literature, but it would be interesting to read any studies that have attempted to ascertain the correlation of number of ILL requests
with usage. The research to answer this question (does the number of ILL requests predict unfettered usage of a resource) would require methodologies that are rife with potential problems, but it would be useful to see if it
<i>could</i> be answered.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calisto MT","serif";color:#44546A"><o:p> </o:p></span></p>
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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calisto MT","serif";color:#44546A">Karen Harker<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calisto MT","serif";color:#44546A">Collection Assessment Librarian<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calisto MT","serif";color:#44546A">940-565-2688<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calisto MT","serif";color:#44546A"><a href="http://librariesareforuse.wordpress.com/"><span style="color:blue">Libraries are for Use</span></a><o:p></o:p></span></p>
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<p class="MsoNormal"><b><span style="font-size:11.0pt;font-family:"Calibri","sans-serif"">From:</span></b><span style="font-size:11.0pt;font-family:"Calibri","sans-serif""> Eril-l [mailto:eril-l-bounces@lists.eril-l.org]
<b>On Behalf Of </b>Steve Oberg<br>
<b>Sent:</b> Monday, November 09, 2015 1:04 PM<br>
<b>To:</b> eril-l@lists.eril-l.org<br>
<b>Subject:</b> Re: [Eril-l] Is Breaking Up THAT Hard to Do?<o:p></o:p></span></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal"><span style="font-size:10.5pt;font-family:"Calibri","sans-serif";color:black">To add a bit more to my previous response, and also in response to more recent comments regarding use of ILL data….<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:10.5pt;font-family:"Calibri","sans-serif";color:black">One of the things I’ve done is a preliminary literature review on the topic of PPV and one of the articles I found interesting was the following one:<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:10.5pt;font-family:"Calibri","sans-serif";color:black"><o:p> </o:p></span></p>
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<p class="MsoNormal"><span style="font-size:10.5pt;font-family:"Calibri","sans-serif";color:black">Hanson, Michael, and Terese Heidenwolf. 2010. “Making the Right Choices: Pay-per-View Use Data and Selection Decisions.”<o:p></o:p></span></p>
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<p class="MsoNormal"><i><span style="font-size:10.5pt;font-family:"Calibri","sans-serif";color:black">College & Research Libraries News</span></i><span style="font-size:10.5pt;font-family:"Calibri","sans-serif";color:black"> 71 (11): 586–88.<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:10.5pt;font-family:"Calibri","sans-serif";color:black"><o:p> </o:p></span></p>
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<p class="MsoNormal"><span style="font-size:10.5pt;font-family:"Calibri","sans-serif";color:black">The authors began their exploration of PPV with the assumption that their serials collection development was strong. This was based on careful evaluation of subscriptions
and faculty involvement in decision-making year-to-year, along with a thorough examination of ILL data. Their results, however, led them to question their initial assumptions, including the validity or relevance of ILL data.<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:10.5pt;font-family:"Calibri","sans-serif";color:black">This was written five years ago and perhaps longitudinal data will be more enlightening. But as I mentioned, I found their institution’s experience to be interesting.<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:10.5pt;font-family:"Calibri","sans-serif";color:black"><o:p> </o:p></span></p>
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<p class="MsoNormal"><span style="font-size:10.5pt;font-family:"Calibri","sans-serif";color:black">The downloadable PowerPoint of the session to which I referred at The Charleston Conference will eventually be linked from the conference schedule, but you can
get it here if you’re interested: <a href="http://librarylink.wheaton.edu/chs15">http://librarylink.wheaton.edu/chs15</a><o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:10.5pt;font-family:"Calibri","sans-serif";color:black">Steve<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:10.5pt;font-family:"Calibri","sans-serif";color:black"><o:p> </o:p></span></p>
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<p class="MsoNormal"><span style="font-size:10.5pt;font-family:"Calibri","sans-serif";color:black"><a href="http://www.wheaton.edu/Academics/Faculty/O/Steve-Oberg"><span style="color:purple">Steve Oberg</span></a><o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:10.5pt;font-family:"Calibri","sans-serif";color:black">Assistant Professor of Library Science<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:10.5pt;font-family:"Calibri","sans-serif";color:black">Electronic Resources and Serials<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:10.5pt;font-family:"Calibri","sans-serif";color:black">Wheaton College (IL)<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:10.5pt;font-family:"Calibri","sans-serif";color:black">+1 (630) 752-5852<o:p></o:p></span></p>
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