World's Best Scientists 2026 revealed!

D-Index & Metrics

Social Sciences and Humanities

D-Index
53
Citations
7977
World Ranking
2338
National Ranking
1128

Robert G. Carlson publication distribution in Social Sciences and Humanities in 2026

The chart shows the distribution of publications by all Research.com ranked scientists in the field of Social Sciences and Humanities in 2026. The highlighted bar marks where Robert G. Carlson sits on this spectrum.

44–53 publications: 28 scientists 54–63 publications: 61 scientists 64–73 publications: 161 scientists 74–83 publications: 225 scientists 84–93 publications: 301 scientists 94–103 publications: 390 scientists 104–113 publications: 406 scientists 114–123 publications: 474 scientists 124–133 publications: 453 scientists 134–143 publications: 434 scientists 144–153 publications: 407 scientists 154–163 publications: 411 scientists 164–173 publications: 391 scientists 174–183 publications: 313 scientists 184–193 publications: 319 scientists 194–203 publications: 304 scientists 204–213 publications: 285 scientists 214–223 publications: 246 scientists 224–233 publications: 213 scientists 234–243 publications: 170 scientists 244–253 publications: 167 scientists 254–263 publications: 162 scientists 264–273 publications: 138 scientists 274–283 publications: 138 scientists 284–293 publications: 113 scientists 294–303 publications: 106 scientists 304–313 publications: 95 scientists 314–323 publications: 101 scientists 324–333 publications: 81 scientists 334–343 publications: 69 scientists 344–353 publications: 56 scientists 354–363 publications: 36 scientists 364–373 publications: 42 scientists 374–383 publications: 41 scientists 384–393 publications: 44 scientists 394–403 publications: 27 scientists 404–413 publications: 30 scientists 414–423 publications: 20 scientists 424–433 publications: 29 scientists 434–443 publications: 29 scientists 444–453 publications: 25 scientists 454–463 publications: 19 scientists 464–473 publications: 21 scientists 474–483 publications: 11 scientists 484–493 publications: 17 scientists 494–503 publications: 7 scientists 504–513 publications: 6 scientists 514–523 publications: 12 scientists 524–533 publications: 10 scientists 534–543 publications: 7 scientists 544–553 publications: 6 scientists 554–563 publications: 12 scientists 564–569 publications: 8 scientists 570+ publications: 100 scientists
44 publications 570+

This scientist: 213 publications — 69th percentile

69% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 570 publications or more.

Robert G. Carlson D-index placement in Social Sciences and Humanities in 2026

The chart shows the D-index (discipline H-index) distribution of Social Sciences and Humanities scientists ranked by Research.com in 2026. The highlighted bar marks where Robert G. Carlson sits on this spectrum.

30 D-Index: 177 scientists 31 D-Index: 210 scientists 32 D-Index: 222 scientists 33 D-Index: 188 scientists 34 D-Index: 181 scientists 35 D-Index: 243 scientists 36 D-Index: 261 scientists 37 D-Index: 272 scientists 38 D-Index: 278 scientists 39 D-Index: 300 scientists 40 D-Index: 297 scientists 41 D-Index: 308 scientists 42 D-Index: 313 scientists 43 D-Index: 300 scientists 44 D-Index: 269 scientists 45 D-Index: 260 scientists 46 D-Index: 228 scientists 47 D-Index: 251 scientists 48 D-Index: 203 scientists 49 D-Index: 186 scientists 50 D-Index: 187 scientists 51 D-Index: 166 scientists 52 D-Index: 138 scientists 53 D-Index: 141 scientists 54 D-Index: 131 scientists 55 D-Index: 137 scientists 56 D-Index: 109 scientists 57 D-Index: 129 scientists 58 D-Index: 95 scientists 59 D-Index: 105 scientists 60 D-Index: 106 scientists 61 D-Index: 86 scientists 62 D-Index: 94 scientists 63 D-Index: 77 scientists 64 D-Index: 79 scientists 65 D-Index: 59 scientists 66 D-Index: 68 scientists 67 D-Index: 51 scientists 68 D-Index: 49 scientists 69 D-Index: 40 scientists 70 D-Index: 43 scientists 71 D-Index: 40 scientists 72 D-Index: 50 scientists 73 D-Index: 46 scientists 74 D-Index: 43 scientists 75 D-Index: 45 scientists 76 D-Index: 45 scientists 77 D-Index: 30 scientists 78 D-Index: 25 scientists 79 D-Index: 31 scientists 80 D-Index: 29 scientists 81 D-Index: 18 scientists 82 D-Index: 21 scientists 83 D-Index: 26 scientists 84 D-Index: 15 scientists 85 D-Index: 15 scientists 86 D-Index: 19 scientists 87 D-Index: 19 scientists 88 D-Index: 12 scientists 89 D-Index: 7 scientists 90 D-Index: 19 scientists 91 D-Index: 20 scientists 92 D-Index: 13 scientists 93 D-Index: 9 scientists 94 D-Index: 13 scientists 95 D-Index: 8 scientists 96 D-Index: 7 scientists 97 D-Index: 6 scientists 98 D-Index: 6 scientists 99 D-Index: 6 scientists 100+ D-Index: 97 scientists
30 D-Index 100+

This scientist: 53 D-Index — 72nd percentile

72% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 100 D-Index or more.

Best Publications

  • Respondent-driven sampling to recruit MDMA users: a methodological assessment.

    Jichuan Wang;Robert G. Carlson;Russel S. Falck;Harvey A. Siegal

  • Treatment barriers identified by substance abusers assessed at a centralized intake unit.

    Richard C. Rapp;Jiangmin Xu;Carey J. A. Carr;D. Timothy Lane

  • Predictors of Transition to Heroin Use among Initially Non-Opioid Dependent Illicit Pharmaceutical Opioid Users: A Natural History Study

    Robert G. Carlson;Ramzi W. Nahhas;Silvia S. Martins;Raminta Daniulaityte

  • An Ethnographic Approach to Targeted Sampling: Problems and Solutions in AIDS Prevention Research among Injection Drug and Crack-Cocaine Users

    Robert G. Carlson;Jichuan Wang;Harvey A. Siegal;Russel S. Falck

  • Waiting Time as a Barrier to Treatment Entry: Perceptions of Substance Users

    Cristina Redko;Richard C. Rapp;Robert G. Carlson

  • The crack life: an ethnographic overview of crack use and sexual behavior among African-Americans in a midwest metropolitan city.

    Robert G. Carlson;Harvey A. Siegal

  • PREDOSE: A Semantic Web Platform for Drug Abuse Epidemiology using Social Media

    Delroy H. Cameron;Gary Alan Smith;Raminta Daniulaityte;Amit P. Sheth

  • “I just wanted to tell you that loperamide WILL WORK”: A Web-Based Study of Extra-Medical Use of Loperamide

    Raminta Daniulaityte;Robert G. Carlson;Russel S. Falck;Delroy H. Cameron

  • “Everything is not right anymore”: Buprenorphine experiences in an era of illicit fentanyl

    Sydney M. Silverstein;Raminta Daniulaityte;Silvia S. Martins;Shannon C. Miller;Shannon C. Miller

  • The prevalence of psychiatric disorder among a community sample of crack cocaine users: an exploratory study with practical implications.

    Russel S. Falck;Jichuan Wang;Harvey A. Siegal;Robert G. Carlson

  • "Those edibles hit hard": Exploration of Twitter data on cannabis edibles in the U.S.

    Francois R. Lamy;Raminta Daniulaityte;Amit P. Sheth;Ramzi W. Nahhas

  • “Time for dabs”: Analyzing Twitter data on marijuana concentrates across the U.S.

    Raminta Daniulaityte;Ramzi W. Nahhas;Sanjaya Wijeratne;Robert G. Carlson

  • Respondent-Driven Sampling in the Recruitment of Illicit Stimulant Drug Users in a Rural Setting: Findings and Technical Issues

    Jichuan Wang;Russel S. Falck;Linna Li;Ahmmed Rahman

  • Correlates of Rural Methamphetamine and Cocaine Users: Results From a Multistate Community Study

    Brenda M. Booth;Carl G. Leukefeld;Russel S. Falck;Jichuan Wang

  • Probable Relationship Between Opioid Abuse and Heroin Use

    Harvey A. Siegal;Robert G. Carlson;Deric R. Kenne;Maria G. Swora

  • Drug use practices among MDMA/ecstasy users in Ohio : a latent class analysis

    Robert G. Carlson;Jichuan Wang;Russel S. Falck;Harvey A. Siegal

  • Factorial Structure of Rosenberg's Self-Esteem Scale Among Crack-Cocaine Drug Users

    Jichuan Wang;Harvey A. Siegal;Russell S. Falck;Robert G. Carlson

  • Individual and system influences on waiting time for substance abuse treatment

    Carey J.A. Carr;Jiangmin Xu;Cristina Redko;D. Timothy Lane

  • Improving linkage with substance abuse treatment using brief case management and motivational interviewing

    Richard C. Rapp;Amy L. Otto;D. Timothy Lane;Cristina Redko

  • Barriers to formal drug abuse treatment in the rural south: a preliminary ethnographic assessment.

    Rocky L. Sexton;Robert G. Carlson;Carl G. Leukefeld;Brenda M. Booth

  • “I’m not afraid of those ones just ‘cause they’ve been prescribed”: Perceptions of risk among illicit users of pharmaceutical opioids

    Raminta Daniulaityte;Russel S. Falck;Robert G. Carlson

Frequent Co-Authors

Russel S. Falck
Russel S. Falck Wright State University
Jichuan Wang
Jichuan Wang George Washington University
Harvey A. Siegal
Harvey A. Siegal Wright State University
Brenda M. Booth
Brenda M. Booth University of Arkansas for Medical Sciences
Carl G. Leukefeld
Carl G. Leukefeld University of Kentucky
Silvia S. Martins
Silvia S. Martins Columbia University
Amit P. Sheth
Amit P. Sheth University of South Carolina
Lu Chen
Lu Chen Stanford University
Linda B. Cottler
Linda B. Cottler University of Florida
William W. Stoops
William W. Stoops University of Kentucky

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