Are OA papers more highly-cited than their toll-access counterparts? Open Access Citation Advantage (OACA)

(no claim to completeness, examples and excerpts of references, retrieved from Web of Science, Google Scholar e.g.)

Pro OA

Ghane, M. R., Niazmand, M. R., & Sabet Sarvestani, A. (2019). The citation advantage for open access science journals with and without article processing charges. Journal of Information Science.
(key results: "The results suggest that authors should consider field- and discipline-related differences in the OA citation advantage, especially when they are considering non-APC OA journals categorised in two or more subjects")

Pollock, D. and Michael, A. (2019), Open access mythbusting: Testing two prevailing assumptions about the effects of open access adoption. Learned Publishing, 32: 7-12.
(key results: " We found no evidence suggesting that OA journals suffer significant quality issues compared with non‐OA journals")

Piwowar, H., Priem, J., Larivière, V., Alperin, J.P., Matthias, L., Norlander, B., Farley, A., West, J. and Haustein, S. (2018) The state of OA: a large-scale analysis of the prevalence and impact of Open Access articles. PeerJ, 6:e4375. 
(key results: 18% more citations for OA articles)

Li Y, Wu C, Yan E, Li K (2018) Will open access increase journal CiteScores? An empirical investigation over multiple disciplines. PLoS ONE 13(8): e0201885.
(key results: "We have found a positive effect for OA journals in general. However, the effect is more pronounced in journals that are published by the Big Five publishers, and in journals in Biology, Medicine and Science. More surprisingly, the OA effect is more pronounced in lower ranked journals than in high-ranking journals, suggesting a “long tail” effect")

Tang, M., Bever, J. D., and Yu, F.‐H. (2017) Open access increases citations of papers in ecology. Ecosphere, 8(7):e01887.
(key results: “Overall, OA articles received significantly more citations than non‐OA articles, and the citation advantage averaged approximately one citation per article per year and increased cumulatively over time after publication” and “A significant OA advantage was found in countries of all three income categories according to per capita GNI, no matter whether the income was high, middle, or low”)

McKiernan, Erin C.; Bourne, Philip E.; Brown, C. Titus; et al. (2016) How open science helps researchers succeed eLife 2016;5:e16800 doi: 10.7554/eLife.16800
(key results:  „We review literature demonstrating that open research is associated with increases in citations, media attention, potential collaborators, job opportunities and funding opportunities”)

Ottaviani, J. (2016) The Post-Embargo Open Access Citation Advantage: It Exists (Probably), It’s Modest (Usually), and the Rich Get Richer (of Course). PLoS ONE, 11(8):e0159614. 
(key results: “Even though effects found here are more modest than reported elsewhere, given the conservative treatments of the data and when viewed in conjunction with other OACA studies already done, the results lend support to the existence of a real, measurable, open access citation advantage with a lower bound of approximately 20%.”)

Tahamtan, I., Safipour Afshar, A. & Ahamdzadeh, K. (2016) Factors affecting number of citations: a comprehensive review of the literature
 SCIENTOMETRICS  Volume: 107  Issue: 3 Pages: 1195-1225

Schimmer, R., Geschuhn, K. K., & Vogler, A. (2015). Disrupting the subscription journals’ business model for the necessary large-scale transformation to open access. doi:10.17617/1.3

Sotudeh, H., Ghasempour, Z. and Yaghtin, M. (2015) The Citation Advantage of Author-Pays Model: The Case of Springer and Elsevier OA Journals. Scientometrics, 104: 581–608.
(key results: “The APC OA papers are, also, revealed to outperform the TA ones in their citation impacts in all the annual comparisons. This finding supports the previous results confirming the citation advantage of OA papers”)

Contra OA:

Thess, André: (2019)  Open Access sollte freiwillig sein:  Viele Wissenschaftler sehen beim Zwang zu Open Access ihre Freiheit eingeschränkt. Ein kritischer Blick auf die Vorzüge des Publikationsmodells. Forschung und Lehre (German only)

Dorta-Gonzalez, P.; Santana-Jimenez, Y. (2018) Prevalence and citation advantage of gold open access in the subject areas of the Scopus database. RESEARCH EVALUATION 27(1) p. 1-15

Gaulé, P.  and Maystre, N. (2011) Getting cited: Does open access help? Research Policy, 40(10): 1332-1338.
(key results: “we find no evidence for a causal effect of open access on citations. However, a quantitatively small causal effect cannot be statistically ruled out”)

Davis, P. M., Lewenstein, B. V., Simon, D. H., Booth, J. G. and Connolly, M. J.L. (2008) Open access publishing, article downloads, and citations: randomised controlled trial, BMJ, 2008; 337:a568.
(key results: “Open access articles were no more likely to be cited than subscription access articles in the first year after publication.”)

Link to collections, initiatives

Tennant, Jon (2017) The Open Access Citation Advantage: A collection of studies that have investigated the potential Open Access citation advantage.

Scholarly Publishing and Academic Resources Coalition) Europe: OACA table, Literature up till 2015:

Open Access net: Arguments and reservations

Open access initiative (Max Planck Digital library): Who benefits? Why it matters How it works

Open Access Library Guide from Arizona State Univ. Library:

Open Access workshop  August 21, 2019:
Kai Geschuhn (MPDL, Munich): What will it take to make OA the default in scholarly communication?
Kirsten (Local MPI library, Jena): Local library Open Access Services