World's Best Scientists 2026 revealed!
Ralf Kuja-Halkola

Ralf Kuja-Halkola

D-Index & Metrics

Discipline name D-Index World Ranking Current World Ranking National Ranking Current National Ranking Publications Citations
Social Sciences and Humanities 57 1778 1598 17 17 271 12833

Ralf Kuja-Halkola publications per year

The chart shows the history of publications by Ralf Kuja-Halkola between 2010 and 2025, highlighting the no. of papers published in each year and offering an overview of the publication velocity of this scholar. Ralf Kuja-Halkola published across 16 years, from 2010 to 2025, averaging 23.9 papers a year. Output peaked at 56 publications in 2023. 83 of the 382 publications appeared in the last two years.

No. of publications
10 20 30 40 50
Bar chart. Horizontal axis: year, 2010 to 2025. Vertical axis: number of publications, 0 to 56. Peak 56 publications in 2023. 2010: 1 publication 2011: 0 publications 2012: 3 publications 2013: 0 publications 2014: 12 publications 2015: 10 publications 2016: 13 publications 2017: 23 publications 2018: 17 publications 2019: 41 publications 2020: 29 publications 2021: 53 publications 2022: 41 publications 2023: 56 publications 2024: 45 publications 2025: 38 publications
2010 2025

382 publications in total across all disciplines

View publications per year as a table
Ralf Kuja-Halkola: publications per year, 2010 to 2025
Year Publications
2010 1
2011 0
2012 3
2013 0
2014 12
2015 10
2016 13
2017 23
2018 17
2019 41
2020 29
2021 53
2022 41
2023 56
2024 45
2025 38
Total 382
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Ralf Kuja-Halkola 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 Ralf Kuja-Halkola sits on this spectrum.

No. of scientists
100 200 300 400
Bar chart with 54 bars. Horizontal axis: publications, 44–53 to 570+. Vertical axis: number of scientists, 0 to 474. Most scientists, 474, have 114–123 publications. The last bar groups every scientist with 570 publications or more. The highlighted bar, 264–273 publications, is where this scientist sits. 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
44–53 publications 570+

This scientist: 271 publications — 83rd percentile

83% of scientists in this discipline score the same or lower.

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

View publications distribution as a table
Number of Social Sciences and Humanities scientists by publication count, Research.com 2026 ranking edition. Based on 7,777 ranked scientists.
Publications Scientists This scientist
44–53 28
54–63 61
64–73 161
74–83 225
84–93 301
94–103 390
104–113 406
114–123 474
124–133 453
134–143 434
144–153 407
154–163 411
164–173 391
174–183 313
184–193 319
194–203 304
204–213 285
214–223 246
224–233 213
234–243 170
244–253 167
254–263 162
264–273 138 271
274–283 138
284–293 113
294–303 106
304–313 95
314–323 101
324–333 81
334–343 69
344–353 56
354–363 36
364–373 42
374–383 41
384–393 44
394–403 27
404–413 30
414–423 20
424–433 29
434–443 29
444–453 25
454–463 19
464–473 21
474–483 11
484–493 17
494–503 7
504–513 6
514–523 12
524–533 10
534–543 7
544–553 6
554–563 12
564–569 8
570+ 100
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Ralf Kuja-Halkola 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 Ralf Kuja-Halkola sits on this spectrum.

No. of scientists
100 200 300
Bar chart with 71 bars. Horizontal axis: D-Index, 30 to 100+. Vertical axis: number of scientists, 0 to 313. Most scientists, 313, have 42 D-Index. The last bar groups every scientist with 100 D-Index or more. The highlighted bar, 57 D-Index, is where this scientist sits. 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: 57 D-Index — 78th percentile

78% of scientists in this discipline score the same or lower.

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

View D-Index distribution as a table
Number of Social Sciences and Humanities scientists by D-index, Research.com 2026 ranking edition. Based on 7,777 ranked scientists.
D-Index Scientists This scientist
30 177
31 210
32 222
33 188
34 181
35 243
36 261
37 272
38 278
39 300
40 297
41 308
42 313
43 300
44 269
45 260
46 228
47 251
48 203
49 186
50 187
51 166
52 138
53 141
54 131
55 137
56 109
57 129 57
58 95
59 105
60 106
61 86
62 94
63 77
64 79
65 59
66 68
67 51
68 49
69 40
70 43
71 40
72 50
73 46
74 43
75 45
76 45
77 30
78 25
79 31
80 29
81 18
82 21
83 26
84 15
85 15
86 19
87 19
88 12
89 7
90 19
91 20
92 13
93 9
94 13
95 8
96 7
97 6
98 6
99 6
100+ 97
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Overview

Ralf Kuja-Halkola is affiliated with the Karolinska Institute in Sweden. Their research spans multiple areas within medicine and psychology, focusing prominently on clinical psychology, psychiatry and mental health, genetics, cognitive neuroscience, and endocrinology, diabetes, and metabolism.

The scientist has explored a variety of topics that include:

  • Attention Deficit Hyperactivity Disorder
  • Child and Adolescent Psychosocial and Emotional Development
  • Autism Spectrum Disorder Research
  • Obsessive-Compulsive Spectrum Disorders
  • Eating Disorders and Behaviors
  • Suicide and Self-Harm Studies
  • Bipolar Disorder and Treatment

Ralf Kuja-Halkola's recent publications illustrate their multidisciplinary focus and involvement in the intersection of mental health, genetics, and biomarker research. Notable works include:

  • "Predicting mental health problems in adolescence using machine learning techniques," 2020, published in PLoS ONE
  • "Adverse Childhood Experiences and Adult Mental Health Outcomes," 2024, published in JAMA Psychiatry
  • "Clinical biomarker-based biological aging and risk of cancer in the UK Biobank," 2023, published in British Journal of Cancer
  • "Mapping phenotypic and aetiological associations between ADHD and physical conditions in adulthood in Sweden: a genetically informed register study," 2021, published in The Lancet Psychiatry
  • "Genetic heterogeneity and subtypes of major depression," 2022, published in Molecular Psychiatry

The scientist collaborates frequently with other experts. Their most common coauthors have been:

  • Henrik Larsson
  • Paul Lichtenstein
  • Brian M. D'Onofrio
  • Isabell Brikell
  • Zheng Chang

Their work is distributed across several publication venues, reflecting a broad publication activity with a strong focus on psychiatry and psychology. Frequent venues include:

  • bioRxiv (Cold Spring Harbor Laboratory)
  • JAMA Psychiatry
  • Journal of Child Psychology and Psychiatry
  • UNC Libraries
  • European Neuropsychopharmacology

In summary, Ralf Kuja-Halkola's research integrates diverse methods and disciplinary perspectives to address clinical psychological and psychiatric questions, with a particular attention to developmental and genetic aspects of mental health disorders and their broader biological correlates.

Best Publications

  • The familial risk of autism.

    Sven Sandin;Paul Lichtenstein;Ralf Kuja-Halkola;Henrik Larsson

  • The Heritability of Autism Spectrum Disorder.

    Sven Sandin;Paul Lichtenstein;Ralf Kuja-Halkola;Christina Hultman

  • Sibling comparison designs: bias from non-shared confounders and measurement error.

    Thomas Frisell;Sara Öberg;Ralf Kuja-Halkola;Arvid Sjölander

  • Paternal age at childbearing and offspring psychiatric and academic morbidity.

    Brian M. D’Onofrio;Martin E. Rickert;Emma Frans;Ralf Kuja-Halkola

  • Practice Does Not Make Perfect No Causal Effect of Music Practice on Music Ability

    Miriam A. Mosing;Guy Madison;Nancy L. Pedersen;Ralf Kuja-Halkola

  • The familial co-aggregation of ASD and ADHD: a register-based cohort study.

    Laura Ghirardi;Isabell Brikell;Ralf Kuja-Halkola;Christine M. Freitag

  • Heritability of endometriosis

    Rama Saha;Hans Järnbert Pettersson;Pia Svedberg;Matts Olovsson

  • Modest familial risks for multiple sclerosis: a registry-based study of the population of Sweden

    Helga Westerlind;Ryan Ramanujam;Daniel Uvehag;Ralf Kuja-Halkola

  • Bipolar disorder and its relation to major psychiatric disorders: a family-based study in the Swedish population.

    Jie Song;Sarah E Bergen;Ralf Kuja-Halkola;Henrik Larsson

  • Heritability of attention-deficit hyperactivity disorder in adults.

    Isabell Brikell;Ralf Kuja-Halkola;Henrik Larsson

  • Adverse Childhood Experiences and Adult Mental Health Outcomes.

    Unknown

  • Attention-Deficit/Hyperactivity Disorder, School Performance, and Effect of Medication.

    Andreas Jangmo;Amanda Stålhandske;Zheng Chang;Qi Chen

  • Predicting mental health problems in adolescence using machine learning techniques.

    Ashley E Tate;Ryan C McCabe;Henrik Larsson;Henrik Larsson;Sebastian Lundström

  • Association between attention deficit hyperactivity disorder and asthma: a systematic review and meta-analysis and a Swedish population-based study

    Samuele Cortese;Shihua Sun;Junhua Zhang;Esha Sharma

  • Heritability of Perinatal Depression and Genetic Overlap With Nonperinatal Depression

    Alexander Viktorin;Samantha Meltzer-Brody;Ralf Kuja-Halkola;Patrick F. Sullivan

  • A total-population multigenerational family clustering study of autoimmune diseases in obsessive-compulsive disorder and Tourette's/chronic tic disorders

    D. Mataix-Cols;D. Mataix-Cols;E. Frans;A. Pérez-Vigil;R. Kuja-Halkola

  • Carryover Effects in Sibling Comparison Designs.

    Arvid Sjölander;Thomas Frisell;Ralf Kuja-Halkola;Sara Öberg

  • Genetic heterogeneity and subtypes of major depression

    Unknown

  • Familial Liability for Eating Disorders and Suicide Attempts: Evidence From a Population Registry in Sweden

    Shuyang Yao;Ralf Kuja-Halkola;Laura M. Thornton;Cristin D. Runfola

  • Association of Psychiatric Comorbidity With the Risk of Premature Death Among Children and Adults With Attention-Deficit/Hyperactivity Disorder.

    Shihua Sun;Ralf Kuja-Halkola;Stephen V. Faraone;Stephen V. Faraone;Brian M. D'Onofrio;Brian M. D'Onofrio

  • The contribution of common genetic risk variants for ADHD to a general factor of childhood psychopathology.

    Isabell Brikell;Henrik Larsson;Henrik Larsson;Yi Lu;Yi Lu;Erik Pettersson

  • Maternal age at childbirth and risk for ADHD in offspring: a population-based cohort study

    Zheng Chang;Paul Lichtenstein;Brian M D’Onofrio;Catarina Almqvist

  • Familial aggregation of attention-deficit/hyperactivity disorder

    Qi Chen;Isabell Brikell;Paul Lichtenstein;Eva Serlachius;Eva Serlachius

  • Schizophrenia and subsequent neighborhood deprivation: revisiting the social drift hypothesis using population, twin and molecular genetic data

    A. Sariaslan;A. Sariaslan;S. Fazel;B. M. D'Onofrio;N. Långström

Frequent Co-Authors

Henrik Larsson
Henrik Larsson Karolinska Institute
Paul Lichtenstein
Paul Lichtenstein Karolinska Institute
Brian M. D’Onofrio
Brian M. D’Onofrio Indiana University
Catarina Almqvist
Catarina Almqvist Karolinska Institute
David Mataix-Cols
David Mataix-Cols Karolinska Institute
Cynthia M. Bulik
Cynthia M. Bulik University of North Carolina at Chapel Hill
Sven Bölte
Sven Bölte Karolinska Institute
Patrik K. E. Magnusson
Patrik K. E. Magnusson Karolinska Institute
Sebastian Lundström
Sebastian Lundström University of Gothenburg
Christian Rück
Christian Rück Karolinska Institute

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