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© 2015 W. Gödert, TH Köln, Institut für Informationswissenschaft / Powered by litecat, BIS Oldenburg (Stand: 04. Juni 2021)
1Walters, G.D.: ¬The citation life cycle of articles published in 13 American Psychological Association journals : a 25-year longitudinal analysis.
In: Journal of the American Society for Information Science and Technology. 62(2011) no.8, S.1629-1636.
Abstract: The annual citation counts of 1,172 articles published in 1985 by 13 American Psychological Association journals were analyzed over a 25-year period. Despite a 61% reduction in citation counts from the peak year (1989: Year 4) to the final year (2010: Year 25), many of these articles were still being cited 25 years after they had been published. When the sample was divided into four categories of impact using the total citation counts for each article-low impact (0-24 citations), moderate impact (25-99 citations), high impact (100-249 citations), and very high impact (250-1763 citations)-the yearly citation counts of low to high-impact articles peaked earlier and displayed a steeper decline than the yearly citation counts of very high-impact articles. Using 5 or more citations a years, 10 or more citations a year, and 20 or more citations a year as markers of moderate-impact, high-impact, and very high-impact articles, respectively, and using the most cited articles in a journal during the first 5 years of the follow-up period as indicators of high impact and very high impact showed promise of predicting impact over the entire 25-year period.
2Walters, G.D.: Measuring the utility of journals in the crime-psychology field : beyond the impact factor.
In: Journal of the American Society for Information Science and Technology. 57(2006) no.13, S.1804-1813.
Abstract: A measure of formal journal utility designed to offset some of the more noteworthy limitations of the impact factor (IF) - i.e., short follow-up, citations to items in the numerator that are not included in the denominator, self-citations, and the greater citation rate of review articles - was constructed and applied to 15 crime-psychology journals. This measure, referred to as Citations Per Article (CPA), was correlated with a measure of informal journal utility defined as the frequency with which 58 first authors in the field consulted these 15 crime-psychology journals. Results indicated that the CPA, but not the IF, correlated significantly with informal utility. Two journals (Law and Human Behavior and Criminal Justice and Behavior) displayed consistently high impact across measures of formal and informal utility while several other journals (Journal of Interpersonal Violence; Psychology, Public Policy, and Law; Sexual Abuse: A Journal of Research and Treatment; and Behavioral Sciences and the Law) showed signs of moderate impact when formal and informal measures were combined.