The Influence of Marketing Journals: A Citation Analysis of the Discipline and its Sub-areas

An important characteristic of journals is how influential they are in the generation and dissemination of scholarly knowledge in a discipline.We report a citation analysis of 49 marketing and marketing-related journals to assess their relative influence based on the index of structural influence proposed by Salancik (1986).We investigate the level and span of influence of the 49 journals, both in the marketing discipline as a whole and in five specific sub-areas of marketing.As expected, the Journal of Marketing emerges as the most influential journal in the discipline and as the journal with the broadest span of influence across all sub-areas of marketing.However, different journals are most influential in each of the sub-areas, and the Journal of Marketing is particularly influential among the applied marketing journals.We also find that the index of structural influence is significantly correlated with all other measures of influence but least so with the impact factors reported in the Social Sciences Citation Index.marketing;citation analysis

Importance, Cohesion and Structural Equivalence in the Evolving Citation Network of the International Journal of Research in Marketing

The citation network of the International Journal of Research in Marketing (IJRM) is examined from 1981 to 1995. We propose a model that contains log-linear and logmultiplicative terms to estimate simultaneously the importance, cohesion, and structural equivalence of journals in the network across time. Our findings show that the overall importance of IJRM in its network is low but growing. The importance of psychology journals in the network appears to be decreasing. Clear cohesive and structurally equivalent groups of core marketing, methodology, managerial and psychology journals with distinct functions in the network are identified. Recommendations for future citation research are offered.Citation analysis;social networks;log-multiplicative models

The Influence of Marketing Journals:A Citation Analysis of the Discipline and its Sub-areas

An important characteristic of journals is how influential they are in the generation and dissemination of scholarly knowledge in a discipline.We report a citation analysis of 49 marketing and marketing-related journals to assess their relative influence based on the index of structural influence proposed by Salancik (1986).We investigate the level and span of influence of the 49 journals, both in the marketing discipline as a whole and in five specific sub-areas of marketing.As expected, the Journal of Marketing emerges as the most influential journal in the discipline and as the journal with the broadest span of influence across all sub-areas of marketing.However, different journals are most influential in each of the sub-areas, and the Journal of Marketing is particularly influential among the applied marketing journals.We also find that the index of structural influence is significantly correlated with all other measures of influence but least so with the impact factors reported in the Social Sciences Citation Index.

Importance, Cohesion and Structural Equivalence in the Evolving Citation Network of the International Journal of Research in Marketing

The citation network of the International Journal of Research in Marketing (IJRM) is examined from 1981 to 1995. We propose a model that contains log-linear and logmultiplicative terms to estimate simultaneously the importance, cohesion, and structural equivalence of journals in the network across time. Our findings show that the overall importance of IJRM in its network is low but growing. The importance of psychology journals in the network appears to be decreasing. Clear cohesive and structurally equivalent groups of core marketing, methodology, managerial and psychology journals with distinct functions in the network are identified. Recommendations for future citation research are offered.

Replication and expansion of epigenome-wide association literature in a black South African population

DNA methylation is associated with non-communicable diseases (NCDs) and related traits. Methylation data on continental African ancestries are currently scarce, even though there are known genetic and epigenetic differences between ancestral groups and a high burden of NCDs in Africans. Furthermore, the degree to which current literature can be extrapolated to the understudied African populations, who have limited resources to conduct independent large-scale analysis, is not yet known. To this end, this study examines the reproducibility of previously published epigenome-wide association studies of DNA methylation conducted in different ethinicities, on factors related to NCDs, by replicating findings in 120 South African Batswana men aged 45 to 88 years. In addition, novel associations between methylation and NCD-related factors are investigated using the Illumina EPIC BeadChip. Results Up to 86% of previously identified epigenome-wide associations with NCD-related traits (alcohol consumption, smoking, body mass index, waist circumference, C-reactive protein, blood lipids and age) overlapped with those observed here and a further 13% were directionally consistent. Only 1% of the replicated associations presented with effects opposite to findings in other ancestral groups. The majority of these inconcistencies were associated with population-specific genomic variance. In addition, we identified eight new 450K array CpG associations not previously reported in other ancestries, and 11 novel EPIC CpG associations with alcohol consumption. Conclusions The successful replication of existing EWAS findings in this African population demonstrates that blood-based 450K EWAS findings from commonly investigated ancestries can largely be extrapolated to ethnicities for which epigenetic data are not yet available. Possible population-specific differences in 14% of the tested associations do, however, motivate the need to include a diversity of ethnic groups in future epigenetic research. The novel associations found with the enhanced coverage of the Illumina EPIC array support its usefulness to expand epigenetic literatur