Table 1.
Main characteristics of ORCID, ResearcherID, ReserchGate, and Academia.edu.
Table 2.
Number of researchers and laboratories per search field at the University of Caen Normandy.
Table 3.
Number of profiles and overlap between sites.
Table 4.
Percentage of researchers having a profile on Academia.edu, ResearchGate, ORCID, and ResearcherID.
Comparison with former studies.
Fig 1.
Number of profiles by discipline on the four sites studied.
Percentages are shown in parentheses. Vertical line: Reference value for the whole population indicating the over- or under-representation of STM researchers vs total population. STM researchers are under-represented on Academia.edu, and over-represented on ResearchGate, ORCID, and ResearcherID.
Fig 2.
Percentage of profiles on the four sites studied grouped by discipline.
Fig 3.
Number of profiles on the four sites categorized by career advancement.
Vertical line: Reference value for the whole population. Percentages are shown in parentheses.
Fig 4.
Number of profiles on the four sites relating to gender.
Vertical line: Reference value for the whole population. Percentages are shown in parentheses.
Fig 5.
Number of publications referenced by researchers on the four sites compared to the number on Scopus.
M and SD: Mean and standard deviation. The numbers above, on, and below the line indicate the percentage of researchers having more, the same, or fewer publications referenced on the studied sites compared to Scopus, respectively.
Fig 6.
Number of citations per article (A) and h-index (B) for ResearchGate and ResearcherID.
Values for citations per article have been rounded to the nearest integer. M and SD: Mean and standard deviation.