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Unlike high-income countries (HICs), there are few early intervention services for psychosis in low-and middle-income countries (LAMICs). In HICs, research spurred the growth of such services. Little is known about the state of EIP research in LAMICs, which we address by examining their research output and collaborations vis-à-vis that of HICs. We conducted a search in Scopus database for early psychosis publications in scientific journals since 1980. Data from each record, including title, author affiliation, and date, were downloaded. For HIC-LAMIC collaborations, data on first, corresponding and last authors' affiliations, and funding were manually extracted. Descriptive statistics and social network analysis were conducted. Globally, early psychosis publications increased from 24 in 1980 to 1297 in 2022. Of 16,942 included publications, 16.1 % had LAMIC authors. 71.3 % involved authors from a single country (regardless of income level). 21.9 % were collaborations between HICs, 6.6 % between HICs and LAMICs, and 0.2 % among LAMICs. For research conducted in LAMICs and involving HIC-LAMIC collaborations, the first, last, and corresponding authors were LAMIC-based in 71.8 %, 60.7 %, and 63.0 %, respectively. These positions were dominated (80 %) by authors from four LAMICs. 29.4 % of the HIC-LAMIC subset was funded solely by LAMIC funders, predominantly two LAMICs. LAMICs are starkly underrepresented in the otherwise flourishing body of early psychosis research. They have far fewer collaborations and less funding than HICs. Closing these gaps in LAMICs where most of the world's youth live is imperative to generate the local knowledge needed to strengthen early psychosis services that are known to improve outcomes. • HICs had 6 times as many early psychosis papers as LAMICs and more collaborations. • HICs collaborated with HICs, with few LAMIC-HIC and inter-LAMIC collaborations. • Only four LAMICs have published 80 % of LAMIC first, last or corresponding papers. • LAMIC funders funded only around 30 % of the HIC-LAMIC early psychosis papers. • There is scarcity of research in LAMICs where knowledge is needed to grow services. [ABSTRACT FROM AUTHOR]

The paper explores the impact of Covid-19 on scientists' collaboration behaviour in the 14 countries with the largest research output. The approach is bibliometric, taking the unit of analysis of collaborations as the individual researchers and the co-authorships in their preprints. The time plot of the data confirms a clear discontinuity in the number of preprint depositions after the Covid-19 outbreak. Less evident is the discontinuity in average number of co-authors per preprint, and also in propensity to collaborate. Investigating further, a multivariate econometric analysis shows that for propensity to national collaboration (both intra- and extramural) there has been a positive "effect" from the pandemic, but negative one on international collaboration. The same analysis conducted by country, however, reveals that these effects are significant only in some countries and often with discordant signs. [ABSTRACT FROM AUTHOR]

Geographic proximity is acknowledged to be a key factor in research collaborations. Specifically, it can work as a possible substitute for institutional proximity. The present study investigates the relevance of the "proximity" effect for different types of national research collaborations. We apply a bibliometric approach based on the Italian 2010–2017 scientific production indexed in the Web of Science. On such dataset, we apply statistical tools for analyzing if and to what extent geographical distance between co-authors in the byline of a publication varies across collaboration types, scientific disciplines, and along time. Results can inform policies aimed at effectively stimulating cross-sector collaborations, and also bear direct practical implications for research performance assessments. [ABSTRACT FROM AUTHOR]

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A total of 1 917 publications of drinking water research in Africa from 1991 to 2013 were identified from the data hosted in online version of SCI-Expanded, Thomson Reuters Web of Science, for bibliometric analysis. The analysis included publication output, distribution of keywords, journals and subject areas, and performances of countries, institutions, and authors. Citation trends and highly-cited publications are also reported. We found that the publication output of related documents increased over the entire period of study. The results showed that 'water', 'drinking water', and 'oxidative stress' were the most frequent terms in publication titles, authors' keywords and KeyWords Plus. The top three subject areas were 'water resources', 'environmental science', and 'environmental and occupational public health'. The ten most productive institutions were located in South Africa and Egypt, and the University of Pretoria was the overall most productive institution. Thus, a quarter of all of the articles published were from South Africa. It was found that articles became increasingly collaborative with greater numbers of authors, page counts and bibliographies. More than half of the internationally collaborative articles were co-authored with researchers from Europe. French and US institutions contributed to the highest number of collaborative articles. [ABSTRACT FROM AUTHOR]