This map shows the geographic impact of S. G. Simpson's research. It shows the number of citations coming from papers published by authors working in each country. You can also color the map by specialization and compare the number of citations received by S. G. Simpson with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites S. G. Simpson more than expected).
This network shows the impact of papers produced by S. G. Simpson. Nodes represent research fields, and links connect fields that are likely to share authors. Colored nodes show fields that tend to cite the papers produced by S. G. Simpson. The network helps show where S. G. Simpson may publish in the future.
Co-authorship network of co-authors of S. G. Simpson
This figure shows the co-authorship network connecting the top 25 collaborators of S. G. Simpson.
A scholar is included among the top collaborators of S. G. Simpson based on the total number of
citations received by their joint publications. Widths of edges
represent the number of papers authors have co-authored together.
Node borders
signify the number of papers an author published with S. G. Simpson. S. G. Simpson is excluded from
the visualization to improve readability, since they are connected to all nodes in the network.
McMahon, Francis J., et al.. (1998). The relationship between alcoholism and bipolar affective disorder: Association in families of comorbid probands. 81(6). 491–492.1 indexed citations
4.
McInnis, M. G., Francis J. McMahon, Tatiana Foroud, et al.. (1998). Evidence for a susceptibility locus for bipolar disorder on chromosome 11p11.5. 81(6).2 indexed citations
5.
McInnis, M. G., et al.. (1998). Supportive evidence for a bipolar susceptibility gene on chromosome 4q35. 81(6).
6.
McMahon, Francis J., et al.. (1998). Sibs affected with BPII are more likely than sibs with BPI to share the linked region on chromosome 18q21. 81(6).1 indexed citations
7.
McMahon, Francis J., O. Colin Stine, Deborah A. Meyers, S. G. Simpson, & J. Raymond DePaulo. (1995). Patterns of maternal transmission in bipolar affective disorder.. PubMed. 56(6). 1277–86.175 indexed citations
Simpson, S. G., Susan E. Folstein, Deborah A. Meyers, & J. Raymond DePaulo. (1992). Assessment of lineality in bipolar I linkage studies. American Journal of Psychiatry. 149(12). 1660–1665.38 indexed citations
12.
Simpson, S. G., Susan E. Folstein, & J. Raymond DePaulo. (1990). Genetic linkage studies of bipolar affective disorder.. PubMed. 39(4). 347–50.5 indexed citations
13.
DePaulo, J. Raymond, S. G. Simpson, Susan E. Folstein, & Marshal F. Folstein. (1989). The new genetics of bipolar affective disorder: clinical implications.. PubMed. 35(7 Suppl). B28–32.2 indexed citations
Rankless uses publication and citation data sourced from OpenAlex, an open and comprehensive
bibliographic database. While OpenAlex provides broad and valuable coverage of the global
research landscape, it—like all bibliographic datasets—has inherent limitations. These include
incomplete records, variations in author disambiguation, differences in journal indexing, and
delays in data updates. As a result, some metrics and network relationships displayed in
Rankless may not fully capture the entirety of a scholar's output or impact.