New study: "#OpenAccess via #repositories (#GreenOA) correlates with higher citation counts and a lower probability of zero citations. In contrast, OA via the publisher's website without an explicit #OpenLicense (#BronzeOA) is associated with higher citation counts but also with a higher probability of zero citations."
https://arxiv.org/abs/2505.15384v1
#Citations #LibreOA #OACA #OpenAccessCitationAdvantage #ScholComm

A two-stage model for factors influencing citation counts
This work aims to study a count response random variable, the number of citations of a research paper, affected by some explanatory variables through a suitable regression model. Due to the fact that the count variable exhibits substantial variation since the sample variance is larger than the sample mean, the classical Poisson regression model seems not to be appropriate. We concentrate attention on the negative binomial regression model, which allows the variance of each measurement to be a function of its predicted value. Nevertheless, the process of citations of papers may be divided into two parts. In the first stage, the paper has no citations, and the second part provides the intensity of the citations. A hurdle model for separating the documents with citations and those without citations is considered. The dataset for the empirical application consisted of 43,190 research papers in the field of Economics and Business from 2014-2021, obtained from The Lens database. Citation counts and social attention scores for each article were gathered from Altmetric database. The main findings indicate that both collaboration and funding have a positive impact on citation counts and reduce the likelihood of receiving zero citations. Higher journal impact factors lead to higher citation counts, while lower peer review ratings lead to fewer citations and a higher probability of zero citations. Mentions in news, blogs, and social media have varying but generally limited effects on citation counts. Open access via repositories (green OA) correlates with higher citation counts and a lower probability of zero citations. In contrast, OA via the publisher's website without an explicit open license (bronze OA) is associated with higher citation counts but also with a higher probability of zero citations.
arXiv.orgNew study: When the journal, Neuropsychopharmacology, studied its own articles (a mix of #GreenOA, #GoldOA, #BronzeOA, and non-OA or #paywalled), it found that "easily accessible article content is most often cited by readers, but that the higher #APCs of #Hybrid tier publishing may not guarantee increased scholarly or social impact."
https://www.nature.com/articles/s41386-024-01796-4
#CitationImpact, #OACA

Effects of open access publishing on article metrics in Neuropsychopharmacology - Neuropsychopharmacology
Neuropsychopharmacology (NPP) offers the option to publish articles in different tiers of an open access (OA) publishing system: Green, Bronze, or Hybrid. Green articles follow a standard access (SA) subscription model, in which readers must pay a subscription fee to access article content on the publisher’s website. Bronze articles are selected at the publisher’s discretion and offer free availability to readers at the same article processing charge (APC) as Green articles. Hybrid articles are fully OA, but authors pay an increased APC to ensure public access. Here, we aimed to determine whether publishing tier affect the impact and reach of scientific articles in NPP. A sample of 6000 articles published between 2001–2021 were chosen for the analysis. Articles were separated by article type and publication year. Citation counts and Altmetric scores were compared between the three tiers. Bronze articles received significantly more citations than Green and Hybrid articles overall. However, when analyzed by year, Bronze and Hybrid articles received comparable citation counts within the past decade. Altmetric scores were comparable between all tiers, although this effect varied by year. Our findings indicate that free availability of article content on the publisher’s website is associated with an increase in citations of NPP articles but may only provide a moderate boost in Altmetric score. Overall, our results suggest that easily accessible article content is most often cited by readers, but that the higher APCs of Hybrid tier publishing may not guarantee increased scholarly or social impact.
NatureIf anyone has a working scraper for "Open Archive" PDF content on the ScienceDirect platform, please let me know.
The PDFs there are only 'open' to humans doing clicks in web browsers. Security seems to have beefed-up a lot since I last did my scrapes! ☹️
#OpenAccess #BronzeOA #Openwashing #ElsevierBeingElsevier #WhyMakeAccessToResearchSoHard?