The number of authors per article in the subject area *Chemical Engineering* is 2.6 on average with a maximum of 15 authors. The mean number of coauthors is increasing by 0.3 per year in the respective time period (Figure 1). The articles in this analysis (*n* = 1303) were cited 5.9 times on average with a maximum of 112 citations.

The number of authors per article in the subject area *Chemistry* is 5.5 on average with a maximum of 16 authors (Figure 2). The mean number of coauthors is increasing by 0.1 per year in the respective time period. The articles in this analysis (*n* = 3142) were cited 13 times on average and 562 as maximum.

Figure 1: Boxplot of the number of authors per paper in the subject area *Chemical Engineering*. The box denotes 25–75% of the values with the median (bold line) in it. The small circles are outliers. Due to a limitation of the y-axis, some outliers might not be visible. The yellow line shows a linear model of the mean number of authors per article with a confidence interval of 0.95 shown in light grey. Data source: Scopus. CC BY 4.0 Schmidt, Fecher, Kobsda.

Figure 2: Boxplot of the number of authors per paper in the subject area *Chemistry*. The box denotes 25–75% of the values with the median (bold line) in it. The small circles are outliers. Due to a limitation of the y-axis, some outliers might not be visible. The yellow line shows a linear model of the mean number of authors per article with a confidence interval of 0.95 shown in light grey. Data source: Scopus. CC BY 4.0 Schmidt, Fecher, Kobsda.

The number of authors per article in the subject area *Pharmacology, Toxicology, and Pharmaceutics* is 5.5 on average with a maximum of 47 authors. The mean number of coauthors is increasing by 0.01 per year in the respective time period (Figure 3). The articles in this analysis (*n* = 1165) were cited 16.8 times on average with a maximum of 526 citations.

Figure 3: Boxplot of the number of authors per paper in the subject area *Pharmacology, Toxicology, and Pharmaceutics*. The box denotes 25–75% of the values with the median (bold line) in it. The small circles are outliers. Due to a limitation of the y-axis, some outliers might not be visible. The yellow line shows a linear model of the mean number of authors per article with a confidence interval of 0.95 shown in light grey. Data source: Scopus. CC BY 4.0 Schmidt, Fecher, Kobsda.

The results of the Advanced search in Scopus were restricted by an algorithm with

- a time period of publishing (2010 to 2016),
- the document types (articles or reviews),
- and a quantitative limitation regarding the publication output (articles by the 20 highest performing authors with the most Scopus listed articles in every subject area).

For details and code see Schmidt et al. 2017.

]]>The number of authors per article in the subject area *Arts and Humanities* is 2.1 on average with a maximum of 8 authors. The mean number of coauthors is decreasing by 0.01 per year in the respective time period (Figure 1). The articles in this analysis (*n* = 749) were cited 6.6 times on average with a maximum of 50 citations.

The number of authors per article in the subject area *Social Sciences* is 2.7 on average with a maximum of 14 authors (Figure 2). The mean number of coauthors is increasing by 0.1 per year in the respective time period. The articles in this analysis (*n* = 1050) were cited 9.7 times on average and 485 as maximum.

Figure 1: Boxplot of the number of authors per paper in the subject area *Arts and Humanities*. The box denotes 25–75% of the values with the median (bold line) in it. The small circles are outliers. The yellow line shows a linear model of the mean number of authors per article with a confidence interval of 0.95 shown in light grey. Data source: Scopus. CC BY 4.0 Schmidt, Fecher, Kobsda.

Figure 2: Boxplot of the number of authors per paper in the subject area *Social Sciences*. The box denotes 25–75% of the values with the median (bold line) in it. The small circles are outliers. The yellow line shows a linear model of the mean number of authors per article with a confidence interval of 0.95 shown in light grey. Data source: Scopus. CC BY 4.0 Schmidt, Fecher, Kobsda.

The results of the Advanced search in Scopus were restricted by an algorithm with

- a time period of publishing (2010 to 2016),
- the document types (articles or reviews),
- and a quantitative limitation regarding the publication output (articles by the 20 highest performing authors with the most Scopus listed articles in every subject area).

For details and code see Schmidt et al. 2017.

]]>The number of authors per article in the subject area *Computer Science* is 4 on average with a maximum of 21 authors. The mean number of coauthors is increasing by 0.1 per year in the respective time period (Figure 1). The articles in this analysis (*n* = 1558) were cited 11.4 times on average with a maximum of 199 citations.

Figure 1: Boxplot of the number of authors per paper in the subject area *Computer Science*. The box denotes 25–75% of the values with the median (bold line) in it. The small circles are outliers. Due to a limitation of the y-axis, some outliers are not shown. The yellow line shows a linear model of the mean number of authors per article with a confidence interval of 0.95 shown in light grey. Data source: Scopus. CC BY 4.0 Schmidt, Fecher, Kobsda.

The number of authors per article in the subject area *Decision Sciences* is 3.1 on average with a maximum of 13 authors (Figure 2). The mean number of coauthors is decreasing by 0.02 per year in the respective time period. The articles in this analysis (*n* = 192) were cited 7 times on average and 35 as maximum which is the smallest number.

Figure 2: Boxplot of the number of authors per paper in the subject area *Decision Sciences*. The box denotes 25–75% of the values with the median (bold line) in it. The small circles are outliers. Due to a limitation of the y-axis, some outliers are not shown. The yellow line shows a linear model of the mean number of authors per article with a confidence interval of 0.95 shown in light grey. Data source: Scopus. CC BY 4.0 Schmidt, Fecher, Kobsda.

The results of the Advanced search in Scopus were restricted by an algorithm with

- a time period of publishing (2010 to 2016)
- the document types (articles or reviews),
- and a quantitative limitation regarding the publication output (articles by the 20 highest performing authors with the most Scopus listed articles in every subject area).

For details and code see Schmidt et al. 2017.

]]>The number of authors per article in the subject area *Dentistry* is 5.5 on average with a maximum of 25 authors. The mean number of coauthors is increasing by 0.04 per year in the respective time period (Figure 1). The articles in this analysis (*n* = 1536) were cited 13.6 times on average with a maximum of 183 citations.

Figure 1: Boxplot of the number of authors per paper in the subject area *Dentistry*. The box denotes 25–75% of the values with the median (bold line) in it. The small circles are outliers. Due to a limitation of the y-axis, some outliers are not shown. The yellow line shows a linear model of the mean number of authors per article with a confidence interval of 0.95 shown in light grey. Data source: Scopus. CC BY 4.0 Schmidt, Fecher, Kobsda.

The number of authors per article in the subject area *Health Professions* is 3.7 on average with a maximum of 16 authors (Figure 2). The mean number of coauthors is increasing by 0.1 per year in the respective time period. The articles in this analysis (*n* = 808) were cited 7 times on average and 140 as maximum.

Figure 2: Boxplot of the number of authors per paper in the subject area *Health Professions*. The box denotes 25–75% of the values with the median (bold line) in it. The small circles are outliers. Due to a limitation of the y-axis, some outliers are not shown. The yellow line shows a linear model of the mean number of authors per article with a confidence interval of 0.95 shown in light grey. Data source: Scopus. CC BY 4.0 Schmidt, Fecher, Kobsda.

The number of authors per article in the subject area *Nursing* is 3.7 on average with a maximum of 61 authors. The mean number of coauthors is decreasing by 0.3 per year in the respective time period (Figure 3). The articles in this analysis (*n* = 1282) were cited 7.5 times on average with a maximum of 126 citations.

Figure 3: Boxplot of the number of authors per paper in the subject area *Nursing*. The box denotes 25–75% of the values with the median (bold line) in it. The small circles are outliers. Due to a limitation of the y-axis, some outliers are not shown. The yellow line shows a linear model of the mean number of authors per article with a confidence interval of 0.95 shown in light grey. Data source: Scopus. CC BY 4.0 Schmidt, Fecher, Kobsda.

The number of authors per article in the subject area *Psychology* is 4.1 on average with a maximum of 61 authors (Figure 4). The mean number of coauthors is increasing by 0.05 per year in the respective time period. The articles in this analysis (*n* = 954) were cited 14.4 times on average and 200 as maximum.

Figure 4: Boxplot of the number of authors per paper in the subject area *Psychology*. The box denotes 25–75% of the values with the median (bold line) in it. The small circles are outliers. Due to a limitation of the y-axis, some outliers are not shown. The yellow line shows a linear model of the mean number of authors per article with a confidence interval of 0.95 shown in light grey. Data source: Scopus. CC BY 4.0 Schmidt, Fecher, Kobsda.

The results of the Advanced search in Scopus were restricted by an algorithm with

- a time period of publishing (2010 to 2016)
- the document types (articles or reviews),

For details and code see Schmidt et al. 2017.

]]>The number of authors per article in the subject area *Immunology and Microbiology* is 9.7 on average with a maximum of 83 authors. The mean number of coauthors is increasing by 0.4 per year in the respective time period (Figure 1). The articles in this analysis (*n* = 968) were cited 34.4 times on average with a maximum of 2938 citations which is the second highest value across the 27 subject areas according to our methodology (see below).

The number of authors per article in the subject area *Neuroscience* is 8 on average with a maximum of 342 authors (Figure 2). The mean number of coauthors is increasing by 0.5 per year in the respective time period, which is the second highest value across the 27 subject areas. The articles in this analysis (*n* = 1122) were cited 38.8 times on average and 924 as maximum.

The number of authors per article in the subject area *Biochemistry, Genetics, and Molecular Biology* is 16.7 on average with a maximum of 1269 authors, which are the second highest numbers across all subject areas. The mean number of coauthors is decreasing by 2.1 per year in the respective time period (Figure 3). The articles in this analysis (*n* = 818) were cited 33.4 times on average with a maximum of 1774 citations.

Figure 1: Boxplot of the number of authors per paper in the subject area *Immunology and Microbiology*. The box denotes 25–75% of the values with the median (bold line) in it. The small circles are outliers. Due to a limitation of the y-axis, some outliers are not shown. The yellow line shows a linear model of the mean number of authors per article with a confidence interval of 0.95 shown in light grey. Data source: Scopus. CC BY 4.0 Schmidt, Fecher, Kobsda.

Figure 2: Boxplot of the number of authors per paper in the subject area *Neuroscience*. The box denotes 25–75% of the values with the median (bold line) in it. The small circles are outliers. Due to a limitation of the y-axis, some outliers are not shown. The yellow line shows a linear model of the mean number of authors per article with a confidence interval of 0.95 shown in light grey. Data source: Scopus. CC BY 4.0 Schmidt, Fecher, Kobsda.

Figure 3: Boxplot of the number of authors per paper in the subject area *Biochemistry, Genetics, and Molecular Biology*. The box denotes 25–75% of the values with the median (bold line) in it. The small circles are outliers. Due to a limitation of the y-axis, some outliers are not shown. The yellow line shows a linear model of the mean number of authors per article with a confidence interval of 0.95 shown in light grey. Data source: Scopus. CC BY 4.0 Schmidt, Fecher, Kobsda.

The results of the Advanced search in Scopus were restricted by an algorithm with

- a time period of publishing (2010 to 2016)
- the document types (articles or reviews),

For details and code see Schmidt et al. 2017.

]]>The number of authors per article in the subject area *Earth and Planetary Sciences* is 8.7 on average with a maximum of 468 authors, which is the fourth highest number across all subject areas in our methodology (see below). The mean number of coauthors is increasing by 0.3 per year in the respective time period (Figure 1). The articles in this analysis (*n* = 2818) were cited 23.4 times on average with a maximum of 1375 citations (fifth highest value among the 27 subject areas).

The number of authors per article in the subject area *Environmental Sciences* is 5.9 on average with a maximum of 49 authors (Figure 2). The mean number of coauthors is increasing by 0.1 per year in the respective time period. The articles in this analysis (*n* = 1759) were cited 17.5 times on average and 624 as maximum (seventh highest value among the 27 subject areas).

Figure 1: Boxplot of the number of authors per paper in the subject area *Earth and Planetary Sciences*. The box denotes 25–75% of the values with the median (bold line) in it. The small circles are outliers. Due to a limitation of the y-axis, some outliers are not shown. The yellow line shows a linear model of the mean number of authors per article with a confidence interval of 0.95 shown in light grey. Data source: Scopus. CC BY 4.0 Schmidt, Fecher, Kobsda.

Figure 2: Boxplot of the number of authors per paper in the subject area *Environmental Sciences*. The box denotes 25–75% of the values with the median (bold line) in it. The small circles are outliers. Due to a limitation of the y-axis, some outliers are not shown. The yellow line shows a linear model of the mean number of authors per article with a confidence interval of 0.95 shown in light grey. Data source: Scopus. CC BY 4.0 Schmidt, Fecher, Kobsda.

The results of the Advanced search in Scopus were restricted by an algorithm with

- a time period of publishing (2010 to 2016)
- the document types (articles or reviews),

For details and code see Schmidt et al. 2017.

]]>The number of authors per article in the subject area *Agricultural and Biological Sciences* is 5.2 on average with a maximum of 111 authors. The mean number of coauthors is increasing by 0.2 per year in the respective time period (Figure 1). The articles in this analysis (*n* = 2710) were cited 8.9 times on average with a maximum of 479 citations.

The number of authors per article in the subject area *Veterinary Science* is 6 on average with a maximum of 22 authors (Figure 2). The mean number of coauthors is increasing by 0.2 per year in the respective time period. The articles in this analysis (*n* = 1404) were cited 6.6 times on average and 98 as maximum.

Figure 1: Boxplot of the number of authors per paper in the subject area *Agricultural and Biological Sciences*. The box denotes 25–75% of the values with the median (bold line) in it. The small circles are outliers. Due to a limitation of the y-axis, some outliers are not shown. The yellow line shows a linear model of the mean number of authors per article with a confidence interval of 0.95 shown in light grey. Data source: Scopus. CC BY 4.0 Schmidt, Fecher, Kobsda.

Figure 2: Boxplot of the number of authors per paper in the subject area *Veterinary Sciences*. The box denotes 25–75% of the values with the median (bold line) in it. The small circles are outliers. The yellow line shows a linear model of the mean number of authors per article with a confidence interval of 0.95 shown in light grey. Data source: Scopus. CC BY 4.0 Schmidt, Fecher, Kobsda.

The results of the Advanced search in Scopus were restricted by an algorithm with

- a time period of publishing (2010 to 2016)
- the document types (articles or reviews),

For details and code see Schmidt et al. 2017.

]]>The number of authors per article in the subject area *Business, Management, and Accounting* is 2.6 on average with a maximum of 8 authors. The mean number of coauthors is increasing by 0.1 per year in the respective time period (Figure 1). The articles in this analysis (*n* = 999) were cited 10.5 times on average with a maximum of 138 citations.

The number of authors per article in the subject area *Economics, Econometrics, and Finance* is 2.8 on average with a maximum of 9 authors (Figure 2). The mean number of coauthors is increasing by 0.1 per year in the respective time period. The articles in this analysis (*n* = 1077) were cited 8.4 times on average and 188 as maximum.

Figure 1: Boxplot of the number of authors per paper in the subject area *Business, Management, and Accounting*. The box denotes 25–75% of the values with the median (bold line) in it. The small circles are outliers. Due to a limitation of the y-axis, some outliers are not shown. The yellow line shows a linear model of the mean number of authors per article with a confidence interval of 0.95 shown in light grey. Data source: Scopus. CC BY 4.0 Schmidt, Fecher, Kobsda.

Figure 2: Boxplot of the number of authors per paper in the subject area *Economics, Econometrics, and Finance*. The box denotes 25–75% of the values with the median (bold line) in it. The small circles are outliers. Due to a limitation of the y-axis, some outliersare not shown. The yellow line shows a linear model of the mean number of authors per article with a confidence interval of 0.95 shown in light grey. Data source: Scopus. CC BY 4.0 Schmidt, Fecher, Kobsda.

The results of the Advanced search in Scopus were restricted by an algorithm with

- a time period of publishing (2010 to 2016)
- the document types (articles or reviews),

For details and code see Schmidt et al. 2017.

]]>The number of authors per article in the subject area *Energy* is 3.6 on average with a maximum of 11 authors. The mean number of coauthors is increasing by 0.3 per year in the respective time period (Figure 1). The articles in this analysis (*n* = 1683) were cited 19.7 times on average with a maximum of 496 citations.

The number of authors per article in the subject area *Engineering* is 2.8 on average with a maximum of 34 authors (Figure 2). The mean number of coauthors is increasing by 0.3 per year in the respective time period. The articles in this analysis were cited 9.8 times on average and 480 as maximum. With a quantity of *n* = 3828 articles, Engineering has the second most articles in the respective time period (see *Methodology*) of all subject areas in Scopus.

The number of authors per article in the subject area *Materials Science* is 2.6 on average with a maximum of 8 authors. The mean number of coauthors is increasing by 0.1 per year in the respective time period (Figure 3). The articles in this analysis (*n* = 999) were cited 10.5 times on average with a maximum of 138 citations.

Figure 1: Boxplot of the number of authors per paper in the subject area *Energy*. The box denotes 25–75% of the values with the median (bold line) in it. The small circles are outliers. Due to a limitation of the y-axis, some outliers are not shown. The yellow line shows a linear model of the mean number of authors per article with a confidence interval of 0.95 shown in light grey. Data source: Scopus. CC BY 4.0 Schmidt, Fecher, Kobsda.

Figure 2: Boxplot of the number of authors per paper in the subject area *Engineering*. The box denotes 25–75% of the values with the median (bold line) in it. The small circles are outliers. Due to a limitation of the y-axis, some outliers are not shown. The yellow line shows a linear model of the mean number of authors per article with a confidence interval of 0.95 shown in light grey. Data source: Scopus. CC BY 4.0 Schmidt, Fecher, Kobsda.

Figure 1: Boxplot of the number of authors per paper in the subject area *Materials Science*. The box denotes 25–75% of the values with the median (bold line) in it. The small circles are outliers. Due to a limitation of the y-axis, some outliers are not shown. The yellow line shows a linear model of the mean number of authors per article with a confidence interval of 0.95 shown in light grey. Data source: Scopus. CC BY 4.0 Schmidt, Fecher, Kobsda.

The results of the Advanced search in Scopus were restricted by an algorithm with

- a time period of publishing (2010 to 2016)
- the document types (articles or reviews),

For details and code see Schmidt et al. 2017.

]]>The number of authors per article in the subject area *Medicine* is 11 on average with a maximum of 1193 authors (Figure 1). Only *Physics and Astronomy* (Schmidt et al. 2017a) as well as *Biochemistry, Genetics, and Molecular Biology *(Schmidt et al. 2017a) have higher numbers regarding authors per article. The mean number of coauthors is increasing by 0.4 per year in the respective time period. With a number of *n* = 7741 articles in seven years, *Medicine* is the subject area with the most publications according to our methodology (see below). The articles in this analysis were cited 30.7 times on average and with a maximum of 2861 citations.

Figure 1: Boxplot of the number of authors per paper in the subject area *Medicine*. The box denotes 25–75% of the values with the median (bold line) in it. The small circles are outliers. Due to a limitation of the y-axis, some outliers are not shown. The yellow line shows a linear model of the mean number of authors per article with a confidence interval of 0.95 shown in light grey. Data source: Scopus. CC BY 4.0 Schmidt, Fecher, Kobsda.

The results of the Advanced search in Scopus were restricted by an algorithm with

- a time period of publishing (2010 to 2016)
- the document types (articles or reviews),

For details and code see Schmidt et al. 2017b.

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