CDL: Circulation as a measure of collection adequacy (Response 5)

From: John P. Abbott <AbbottJP_at_appstate.edu>
Date: Wed, 08 Mar 2006 11:11:15 -0500
To: Colldv-l <colldv-l_at_usc.edu>
[Original posting is follows and the response follows it.]

From: SUSAN BEIDLER <BEIDLER_at_lycoming.edu>

I work in a small academic library serving about 1500 undergraduates 
and 100 faculty.  As I have been trying to do more active assessment 
of our collection, I have been comparing our circulation figures for 
specific call number ranges/disciplines with both the number of new 
volumes purchased in those areas and the total number of volumes for 
that area.

What I'm wondering is if there is a generally accepted number or 
percentage of the collection's circulation that says it is adequate to 
meet primary clientele needs?

An example might make my question more clear.  Let's say that we have 
2623 books in the circulating psychology call number ranges. 
Circulation last year for that call number range was 243, or 9.26% of 
the collection.  How do I know if that percentage of use is good or bad?

Thanks for any suggestions you can give me.

Sue Beidler
Snowden Library
Lycoming College
700 College Place
Williamsport PA 17701
   phone: 570-321-4084
fax:      570 321-4090
email: <mailto:beidler_at_lycoming.edu>beidler_at_lycoming.edu


==#5==

From: Margo Warner Curl <MCURL_at_wooster.edu>

Susan -

I don't think anything has been published recently giving value 
judgements on circulation rates  - some stuff on using circ rates for 
collection development decisions, though. Most recent is "Use of 
circulation statistics and interlibrary loan data in collecton 
management' by Jennifer E. Knievel, Heather Wicht and Lynn Silipingni 
Connawa. College & Research Libraries. 67(1), January 2006, p. 35-49.

In a study I did for the four CONSORT colleges (Denison, Kenyon, Ohio 
Wesleyan, Wooster) in Ohio in 2001 --- we had an average per library 
circulation rate of 34-49%, with individual areas ranging from 0% to 75%.

Margo


Margo Warner Curl
Technical Services Librarian
The College of Wooster Libraries
1140 Beall Avenue
Wooster OH 44691
phone: 330-263-2154
fax: 330-263-2253
email: mcurl_at_wooster.edu
Received on Fri Mar 10 2006 - 02:22:48 EST