Correlation between Journal Self-citation and Impact Factor in ISC s PJCR Agriculture and Veterinary Science Journals during 2001-2007

This study investigates correlation between journal self – citation and impact factor in Agriculture and Veterinary subject category through the scientific journals indexed in ISC s PJCR during 2001 to 2007. Citation analysis is used to conduct the research. The results indicate a significant correlation between impact factor and journal self – citation (r=0.425, sig= 0.000); that is, journals with low impact factor have less self – citation that indicates self – citation has a positive effect on impact factor. Pearson Correlation Coefficient demonstrates a relationship between impact factor and number of articles in negative side (r=- 0.170, sig=0.037) that means the number of articles does not affect journal impact factor and also journals with more articles do not have higher impact factor. There is a significant relationship between the number of articles and journal self – citation (r= 0.596, sig = 0.000) that indicates the more number of articles the more number of self-citations. Findings show that journal self – cited rate in Agriculture and Veterinary subject category during 2001 to 2007 has undergone a descending process. After the removal of journal self – citation, the rank of 47 journals descended, 86 journals ascended, the rank of 18 journals did not change and the impact factor of 28 journals decreased to zero.