ASSESSING THE OPEN ACCESS EFFECT FOR HYBRID JOURNALS

"The results of this analysis clearly show that hybrid OA offers significant benefits for researchers, increasing usage, citations, and attention. On average, OA articles are downloaded four times as often as non-OA articles. Some of this is undoubtedly usage by interested people that do not have the benefit of an affiliation with a subscribing institution, but some is likely by researchers from subscribing institutions that are travelling or just not on their campus. Turning to citations, on average OA articles are cited 1.6 times more frequently than similar subscription articles. And looking at Altmetric, on average, OA articles attracted 2.4 times more attention than non-OA articles. As noted in the discussion at the end of this white paper, we cannot control for all variables in this type of analysis, and in particular there is a selection bias risk – for example, that authors choose OA for their most significant work. Nonetheless, several of the specific findings from this study indicate that OA does of itself confer benefits, including the comparison of article cohorts from a single country (the UK). The most direct comparison is between recognised users where usage of OA articles is approximately 1.5 times higher, indicating likely enhanced discovery, resulting in part from greater sharing...."