Current self-citation rates

[White,Howard]

Hi,

In my 2001 JASIST article "Authors as Citers over Time," I report self-citation rates for eight information scientists that are consistent with Loet's figures—perhaps a bit lower. There are also some leads in that piece to earlier work on the subject. Authorial self-citation is generally quite modest and reasonable.

Howard White

From: Loet Leydesdorff <loet at LEYDESDORFF.NET<mailto:loet at LEYDESDORFF.NET>>
Reply-To: ASIS&T Special Interest Group on Metrics <SIGMETRICS at LISTSERV.UTK.EDU<mailto:SIGMETRICS at LISTSERV.UTK.EDU>>
Date: Friday, April 4, 2014 at 9:08 AM
To: "SIGMETRICS at LISTSERV.UTK.EDU<mailto:SIGMETRICS at LISTSERV.UTK.EDU>" <SIGMETRICS at LISTSERV.UTK.EDU<mailto:SIGMETRICS at LISTSERV.UTK.EDU>>
Subject: Re: [SIGMETRICS] Current self-citation rates

Dear Jim,

I agree.
In terms of journal self-citation rates, the following on the basis of JCR 2012:

Statistics



Self-citations as percentage of references

Self-citations as percentage of citations

N

Valid

10611

10936

Missing

325

0

Mean

9.25841

11.73770

Median

6.13000

7.97500

Std. Deviation

10.245547

12.145664

Variance

104.971

147.517


16 journals are exclusively referencing within the journal; 2 journals are exclusively cited within the journal.

Best,
Loet

________________________________
LoetLeydesdorff
Professor Emeritus, University of Amsterdam
AmsterdamSchool of Communications Research (ASCoR)
loet at leydesdorff.net <mailto:loet at leydesdorff.net> ; http://www.leydesdorff.net/
Honorary Professor, SPRU, <http://www.sussex.ac.uk/spru/> University of Sussex;
Guest Professor Zhejiang Univ.<http://www.zju.edu.cn/english/>, Hangzhou; Visiting Professor, ISTIC, <http://www.istic.ac.cn/Eng/brief_en.html> Beijing;
Visiting Professor, Birkbeck<http://www.bbk.ac.uk/>, University of London;
http://scholar.google.com/citations?user=ych9gNYAAAAJ&hl=en


From: ASIS&T Special Interest Group on Metrics [mailto:SIGMETRICS at LISTSERV.UTK.EDU] On Behalf Of James Hartley
Sent: Friday, April 04, 2014 2:27 PM
To: SIGMETRICS at LISTSERV.UTK.EDU<mailto:SIGMETRICS at LISTSERV.UTK.EDU>
Subject: Re: [SIGMETRICS] Current self-citation rates

We need to distinguish between journal self citation rates and author self citation rates….

Jim Hartley

From: ASIS&T Special Interest Group on Metrics [mailto:SIGMETRICS at LISTSERV.UTK.EDU] On Behalf Of Marie McVeigh
Sent: 04 April 2014 12:45
To: SIGMETRICS at LISTSERV.UTK.EDU<mailto:SIGMETRICS at LISTSERV.UTK.EDU>
Subject: Re: [SIGMETRICS] Current self-citation rates

Here is an old (but more recent than Seglen) reference that will give you some sense of the distribution of self-citation rates in the Science edition of JCR:  http://wokinfo.com/essays/journal-self-citation-jcr/

As a point of interest and comparison with Loet's number, I would suggest also looking at the average journal-level self-citation rate.  With the following in mind: a journal with a very low overall citation count can have a high % of journal self-citations without this representing any problematic pattern.   That's why multiple criteria other than journal self-citation rate are used to consider suppression from the JCR (see:  http://wokinfo.com/media/pdf/jcr-suppression.pdf)

Marie E McVeigh

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