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Impact Assessment

In research, Impact Assessment stands highest in Physical Sciences (#4,609 of 17,446 worldwide) and Environmental Science (#1,673 of 5,407 worldwide), over all time. Relative to its size it is most specialised in Environmental Science (Environmental Science is 6.1× its share of world research).

impactassessment.comROR OpenAlex
World rank, 2022-now
#9,549
of 22,385 · #6,216 all time
Rank in United States
#1,298
of 3,332
Research works
466
▲ 54% vs 2018-21
Citations
11k
22.6 per fractional work
Top-10% rate
13.0%
all institutions 10.0%
vs its own fields
1.07×
1.00× is exactly expected
Open access
40%
world 40%
International
42%
world 18%
Impact Assessment

What is Impact Assessment known for in research?

The fields where it stands highest, over all time, ranked among every institution above the floor in each field.

FieldWorld rankWhere that sitsTop-10% rateWorks
Physical SciencesDomain #4,609 of 17,446 10.6%203
Environmental ScienceField #1,673 of 5,407 11.9%120

Each strip is that field's whole ranked pool, with the notch where Impact Assessment sits in it, in the colour of the band that rank falls in. The track under the rate is the rate itself: it carries no average mark, because the average differs by field (from about 6% in Dentistry to 21% in Economics).

Which fields of science does Impact Assessment work in?

In 2022-now, 48% of research at Impact Assessment is in Physical Sciences, 20% in Health Sciences. Its largest fields are Environmental Science (30%), Medicine (15%), Engineering (8%). It does 1.3× the world's share of Life Sciences.

Physical Sciences: 57 fractional works · 48.4% of its workEnvironmental Science: 36 fractional works · 30.4% of its workHealth, Toxicology and Mutagenesis: 13 fractional works · 11.3% of its workEnvironmental Chemistry: 5 fractional works · 4.4% of its workWater Science and Technology: 4 fractional works · 3.1% of its workManagement, Monitoring, Policy and Law: 3 fractional works · 2.9% of its workPollution: 3 fractional works · 2.8% of its workGlobal and Planetary Change: 2 fractional works · 1.7% of its workEcology: 2 fractional works · 1.7% of its workEnvironmental Engineering: 1 fractional works · 1.2% of its workIndustrial and Manufacturing Engineering: 1 fractional works · 0.9% of its workNature and Landscape Conservation: 0 fractional works · 0.4% of its workEngineering: 9 fractional works · 7.6% of its workBiomedical Engineering: 2 fractional works · 1.8% of its workMechanical Engineering: 2 fractional works · 1.7% of its workMechanics of Materials: 2 fractional works · 1.5% of its workOcean Engineering: 1 fractional works · 0.7% of its workElectrical and Electronic Engineering: 1 fractional works · 0.7% of its workCivil and Structural Engineering: 1 fractional works · 0.5% of its workAerospace Engineering: 1 fractional works · 0.4% of its workSmaller subfields together: 0 fractional works · 0.4% of its workComputer Science: 4 fractional works · 3.5% of its workInformation Systems: 2 fractional works · 1.4% of its workArtificial Intelligence: 2 fractional works · 1.3% of its workComputational Theory and Mathematics: 0 fractional works · 0.3% of its workComputer Vision and Pattern Recognition: 0 fractional works · 0.3% of its workSmaller subfields together: 0 fractional works · 0.3% of its workEarth and Planetary Sciences: 3 fractional works · 2.5% of its workAtmospheric Science: 2 fractional works · 1.3% of its workGeochemistry and Petrology: 1 fractional works · 0.6% of its workOceanography: 1 fractional works · 0.4% of its workSmaller subfields together: 0 fractional works · 0.2% of its workMaterials Science: 2 fractional works · 1.8% of its workMaterials Chemistry: 1 fractional works · 0.8% of its workBiomaterials: 1 fractional works · 0.7% of its workPolymers and Plastics: 0 fractional works · 0.3% of its workSmaller subfields together: 0 fractional works · 0.1% of its workChemical Engineering: 1 fractional works · 0.8% of its workProcess Chemistry and Technology: 0 fractional works · 0.4% of its workChemical Health and Safety: 0 fractional works · 0.3% of its workSmaller subfields together: 0 fractional works · 0.1% of its workEnergy: 1 fractional works · 0.7% of its workRenewable Energy, Sustainability and the Environment: 1 fractional works · 0.7% of its workSmaller subfields together: 0 fractional works · 0.1% of its workChemistry: 1 fractional works · 0.6% of its workSpectroscopy: 0 fractional works · 0.3% of its workSmaller subfields together: 0 fractional works · 0.4% of its workMathematics: 0 fractional works · 0.2% of its workPhysics and Astronomy: 0 fractional works · 0.1% of its workHealth Sciences: 24 fractional works · 20.3% of its workMedicine: 18 fractional works · 15.1% of its workPublic Health, Environmental and Occupational Health: 3 fractional works · 2.4% of its workEpidemiology: 2 fractional works · 1.5% of its workOncology: 2 fractional works · 1.5% of its workCardiology and Cardiovascular Medicine: 1 fractional works · 1.2% of its workPulmonary and Respiratory Medicine: 1 fractional works · 1.0% of its workDermatology: 1 fractional works · 1.0% of its workPhysiology: 1 fractional works · 0.9% of its workRadiology, Nuclear Medicine and Imaging: 1 fractional works · 0.7% of its workPathology and Forensic Medicine: 1 fractional works · 0.5% of its workHepatology: 1 fractional works · 0.5% of its workNephrology: 1 fractional works · 0.5% of its workInfectious Diseases: 1 fractional works · 0.4% of its workCritical Care and Intensive Care Medicine: 0 fractional works · 0.4% of its workPediatrics, Perinatology and Child Health: 0 fractional works · 0.4% of its workImmunology and Allergy: 0 fractional works · 0.3% of its workReproductive Medicine: 0 fractional works · 0.3% of its workEndocrinology, Diabetes and Metabolism: 0 fractional works · 0.3% of its workRheumatology: 0 fractional works · 0.3% of its workNeurology: 0 fractional works · 0.3% of its workSurgery: 0 fractional works · 0.3% of its workSmaller subfields together: 1 fractional works · 0.8% of its workHealth Professions: 5 fractional works · 4.1% of its workGeneral Health Professions: 2 fractional works · 1.5% of its workOccupational Therapy: 1 fractional works · 1.0% of its workSpeech and Hearing: 1 fractional works · 0.8% of its workHealth Information Management: 0 fractional works · 0.4% of its workSmaller subfields together: 1 fractional works · 0.4% of its workNursing: 1 fractional works · 0.6% of its workNutrition and Dietetics: 1 fractional works · 0.6% of its workDentistry: 0 fractional works · 0.3% of its workVeterinary: 0 fractional works · 0.2% of its workLife Sciences: 20 fractional works · 17.2% of its workBiochemistry, Genetics and Molecular Biology: 9 fractional works · 7.6% of its workMolecular Biology: 4 fractional works · 3.7% of its workCancer Research: 1 fractional works · 1.0% of its workCell Biology: 1 fractional works · 0.9% of its workGenetics: 1 fractional works · 0.7% of its workBiotechnology: 1 fractional works · 0.6% of its workBiophysics: 0 fractional works · 0.4% of its workSmaller subfields together: 0 fractional works · 0.2% of its workAgricultural and Biological Sciences: 8 fractional works · 6.7% of its workFood Science: 3 fractional works · 2.2% of its workPlant Science: 2 fractional works · 2.1% of its workGeneral Agricultural and Biological Sciences: 1 fractional works · 0.6% of its workSoil Science: 1 fractional works · 0.6% of its workEcology, Evolution, Behavior and Systematics: 0 fractional works · 0.4% of its workForestry: 0 fractional works · 0.3% of its workAquatic Science: 0 fractional works · 0.2% of its workSmaller subfields together: 0 fractional works · 0.3% of its workImmunology and Microbiology: 2 fractional works · 1.5% of its workImmunology: 2 fractional works · 1.4% of its workSmaller subfields together: 0 fractional works · 0.1% of its workPharmacology, Toxicology and Pharmaceutics: 1 fractional works · 0.7% of its workPharmaceutical Science: 1 fractional works · 0.6% of its workSmaller subfields together: 0 fractional works · 0.1% of its workNeuroscience: 1 fractional works · 0.7% of its workCognitive Neuroscience: 0 fractional works · 0.2% of its workSmaller subfields together: 1 fractional works · 0.4% of its workSocial Sciences: 17 fractional works · 14.1% of its workSocial Sciences: 7 fractional works · 6.2% of its workPolitical Science and International Relations: 2 fractional works · 2.0% of its workSociology and Political Science: 2 fractional works · 1.8% of its workEducation: 1 fractional works · 0.8% of its workLaw: 1 fractional works · 0.5% of its workHealth: 0 fractional works · 0.4% of its workDemography: 0 fractional works · 0.3% of its workSafety Research: 0 fractional works · 0.2% of its workSmaller subfields together: 0 fractional works · 0.2% of its workEconomics, Econometrics and Finance: 3 fractional works · 2.2% of its workEconomics and Econometrics: 1 fractional works · 0.9% of its workFinance: 1 fractional works · 0.8% of its workGeneral Economics, Econometrics and Finance: 1 fractional works · 0.6% of its workBusiness, Management and Accounting: 3 fractional works · 2.2% of its workManagement of Technology and Innovation: 1 fractional works · 0.7% of its workStrategy and Management: 1 fractional works · 0.7% of its workOrganizational Behavior and Human Resource Management: 0 fractional works · 0.3% of its workManagement Information Systems: 0 fractional works · 0.3% of its workSmaller subfields together: 0 fractional works · 0.2% of its workPsychology: 2 fractional works · 1.7% of its workSocial Psychology: 1 fractional works · 0.6% of its workClinical Psychology: 0 fractional works · 0.4% of its workDevelopmental and Educational Psychology: 0 fractional works · 0.4% of its workExperimental and Cognitive Psychology: 0 fractional works · 0.2% of its workSmaller subfields together: 0 fractional works · 0.1% of its workArts and Humanities: 1 fractional works · 1.0% of its workLiterature and Literary Theory: 0 fractional works · 0.4% of its workReligious studies: 0 fractional works · 0.4% of its workSmaller subfields together: 0 fractional works · 0.1% of its workDecision Sciences: 1 fractional works · 0.9% of its workInformation Systems and Management: 1 fractional works · 0.5% of its workManagement Science and Operations Research: 0 fractional works · 0.2% of its workSmaller subfields together: 0 fractional works · 0.2% of its workALL ITS WORKImpact Assessment119fractional works, 2022-now
Life Sciences17%Physical Sciences48%Health Sciences20%Social Sciences14%

Each ring splits the one inside it: the four domains of science, their fields, their subfields. Size is fractional works in 2022-now. Every slice is a page; the interactive view zooms down to single topics and colours each by how much more of it this institution does than the world.

Its 4 domains and 26 fields, with their numbers
    1. Environmental Science3630.4%
    2. Engineering97.6%
    3. Computer Science43.5%
    4. Earth and Planetary Sciences32.5%
    5. Materials Science21.8%
    6. Chemical Engineering10.8%
    7. Energy10.7%
    8. Chemistry10.6%
    9. Mathematics00.2%
    10. Physics and Astronomy00.1%
    1. Medicine1815.1%
    2. Health Professions54.1%
    3. Nursing10.6%
    4. Dentistry00.3%
    5. Veterinary00.2%
    1. Biochemistry, Genetics and Molecular Biology97.6%
    2. Agricultural and Biological Sciences86.7%
    3. Immunology and Microbiology21.5%
    4. Pharmacology, Toxicology and Pharmaceutics10.7%
    5. Neuroscience10.7%
    1. Social Sciences76.2%
    2. Economics, Econometrics and Finance32.2%
    3. Business, Management and Accounting32.2%
    4. Psychology21.7%
    5. Arts and Humanities11.0%
    6. Decision Sciences10.9%
All of science, and how each field's share has moved since 1950: the Science domain explorer

What does Impact Assessment specialise in?

Where its research is concentrated relative to its size: Environmental Science takes 6.1× the share of its output that it takes of world research.

  1. Environmental ScienceField · 36.2 works6.1×
← less than its size predicts1×more →

Location quotient, a volume reading rather than an impact one. It surfaces small, lopsided specialities.

Field profile

Location quotient across every field it publishes in: outside the ring is more than an institution of this size would be expected to publish, inside it is less.

Agricultural and Biological Sciences: 1.40× its world share, 8 worksAgricultural and Bio…Biochemistry, Genetics and Molecular Biology: 1.43× its world share, 9 worksBiochemistry, Geneti…Immunology and Microbiology: 1.49× its world share, 2 worksImmunology and Micro…Neuroscience: 0.40× its world share, 1 worksNeurosciencePharmacology, Toxicology and Pharmaceutics: 2.08× its world share, 1 worksPharmacology, Toxico…Chemical Engineering: 2.38× its world share, 1 worksChemical EngineeringChemistry: 0.41× its world share, 1 worksChemistryComputer Science: 0.46× its world share, 4 worksComputer ScienceEarth and Planetary Sciences: 1.58× its world share, 3 worksEarth and Planetary …Energy: 0.79× its world share, 1 worksEnergyEngineering: 0.51× its world share, 9 worksEngineeringEnvironmental Science: 6.13× its world share, 36 worksEnvironmental ScienceMaterials Science: 0.52× its world share, 2 worksMaterials ScienceMathematics: 0.14× its world share, 0 worksMathematicsPhysics and Astronomy: 0.06× its world share, 0 worksPhysics and AstronomyDentistry: 0.68× its world share, 0 worksDentistryHealth Professions: 1.56× its world share, 5 worksHealth ProfessionsMedicine: 0.79× its world share, 18 worksMedicineNursing: 1.26× its world share, 1 worksNursingVeterinary: 1.14× its world share, 0 worksVeterinaryArts and Humanities: 0.34× its world share, 1 worksArts and HumanitiesBusiness, Management and Accounting: 0.68× its world share, 3 worksBusiness, Management…Decision Sciences: 0.89× its world share, 1 worksDecision SciencesEconomics, Econometrics and Finance: 1.03× its world share, 3 worksEconomics, Econometr…Psychology: 0.54× its world share, 2 worksPsychologySocial Sciences: 0.49× its world share, 7 worksSocial Sciences1×world share
more than its size predictsabout as predictedless

Rings at 0.5×, 1× and 2×. Widest outward: Environmental Science, 6.1×. Every wedge is a field page.

All 26 fields, with their numbers
  1. Environmental Science6.13×36 works
  2. Chemical Engineering2.38×1 works
  3. Pharmacology, Toxicology and Pharmaceutics2.08×1 works
  4. Earth and Planetary Sciences1.58×3 works
  5. Health Professions1.56×5 works
  6. Immunology and Microbiology1.49×2 works
  7. Biochemistry, Genetics and Molecular Biology1.43×9 works
  8. Agricultural and Biological Sciences1.40×8 works
  9. Nursing1.26×1 works
  10. Veterinary1.14×0 works
  11. Economics, Econometrics and Finance1.03×3 works
  12. Decision Sciences0.89×1 works
  13. Energy0.79×1 works
  14. Medicine0.79×18 works
  15. Dentistry0.68×0 works
  16. Business, Management and Accounting0.68×3 works
  17. Psychology0.54×2 works
  18. Materials Science0.52×2 works
  19. Engineering0.51×9 works
  20. Social Sciences0.49×7 works
  21. Computer Science0.46×4 works
  22. Chemistry0.41×1 works
  23. Neuroscience0.40×1 works
  24. Arts and Humanities0.34×1 works
  25. Mathematics0.14×0 works
  26. Physics and Astronomy0.06×0 works

Who are the top researchers at Impact Assessment?

Ranked on the quality score, John S. Petterson, Edward W. Glazier and Paula Ollila lead among researchers whose main affiliation is Impact Assessment.

  1. 1 John S. Petterson United States · #1,815,393 worldwide 842 citations · 36 works
  2. 2 Edward W. Glazier United States · #2,062,487 worldwide 392 citations · 41 works
  3. 3 Paula Ollila United States · #3,600,430 worldwide 63 citations · 17 works
  4. 4 David R. Cressman United States · #4,354,393 worldwide 46 citations · 18 works
All ranked researchers at Impact Assessment

What are the most cited papers from Impact Assessment?

The most cited paper from Impact Assessment is "An Association between Air Pollution and Mortality in Six U.S. Cities" (Douglas W. Dockery, C. Arden Pope, Xiping Xu et al., 1993), with 8,197 citations. Next come "The Nitrogen Cascade" (2,939) and "Correlation of chemical structure with reproductive and developmental toxicity as it relates to the use of the threshold of toxicological concern" (1,640).

Most cited papers
#PaperReleasedCitations
1 An Association between Air Pollution and Mortality in Six U.S. Cities Douglas W. Dockery, C. Arden Pope, Xiping Xu et al. · New England Journal of Medicine Open access 9 Dec 1993 8,197
2 The Nitrogen Cascade James N. Galloway, John D. Aber, Jan Willem Erisman et al. · BioScience 2003 2,939
3 Correlation of chemical structure with reproductive and developmental toxicity as it relates to the use of the threshold of toxicological concern Michael C. Laufersweiler, Bernard Kwaku-Mensah Gadagbui, Irene Abraham et al. · Regulatory Toxicology and Pharmacology 16 Oct 2011 1,640
4 Impacts of a warming Arctic Arctic climate impact assessment Susan Joy Hassol 2004 768
5 Risk Factors for Coronavirus Disease 2019 (COVID-19) Death in a Population Cohort Study from the Western Cape Province, South Africa Andrew Boulle et al. · Clinical Infectious Diseases Open access264 authors 11 Aug 2020 601
All 62 most cited papers, with filters and sorting

Which keywords describe research at Impact Assessment?

By fractional works in 2022-now, weighted toward what it does more of than the world: Health Effects, Global Distribution, Environmental Exposure, Toxicity, Environmental Impact, Wastewater Treatment, Bioaccumulation and Exposure Pathways.

▲ more of its work than of the world's◆ about the world's share▼ less than the world's

Size is fractional works in 2022-now in the topics tagged with each word; colour is the word's share of this institution's work against its share of the world's. The 40 words are chosen for being large and distinctive. Each links to the topic it comes from most.

All 40 words, with their numbers
  1. Health Effects13▲ 18×14 topics
  2. Global Distribution8▲ 102×3 topics
  3. Environmental Impact8▲ 3.7×24 topics
  4. Environmental Exposure7▲ 56×3 topics
  5. Climate Change6▲ 2.0×27 topics
  6. Oxidative Stress6▲ 3.3×21 topics
  7. Toxicity6▲ 12×12 topics
  8. Sustainability5▲ 1.87×24 topics
  9. Epidemiology5◆ 1.12×32 topics
  10. Wastewater Treatment5▲ 18×4 topics
  11. Bioaccumulation5▲ 47×3 topics
  12. Biological Monitoring5▲ 155×2 topics
  13. Cardiovascular Disease5▲ 3.4×17 topics
  14. Exposure Pathways5▲ 94×2 topics
  15. Perfluoroalkyl Substances4▲ 201×1 topic
  16. Polyfluoroalkyl Compounds4▲ 201×1 topic
  17. Sustainable Development4▲ 2.4×9 topics
  18. Inflammation4▲ 1.63×22 topics
  19. Public Health4▲ 2.2×13 topics
  20. Metabolic Disorders4▲ 26×2 topics
  21. Brominated Flame Retardants4▲ 82×1 topic
  22. Polycyclic Aromatic Hydrocarbons4▲ 55×1 topic
  23. Bisphenol A4▲ 78×1 topic
  24. Endocrine-Disrupting Chemicals4▲ 78×1 topic
  25. Mortality3▲ 5.0×7 topics
  26. Waste Management3▲ 7.2×5 topics
  27. Renewable Energy3▲ 1.92×8 topics
  28. Water Resources3▲ 9.9×4 topics
  29. Food Safety2▲ 7.1×7 topics
  30. Global Warming2▲ 4.3×5 topics
  31. Pesticides2▲ 26×3 topics
  32. Human Health2▲ 11×2 topics
  33. Water Quality2▲ 4.4×8 topics
  34. Water Treatment2▲ 14×3 topics
  35. Legal Regulation2▲ 7.5×2 topics
  36. Recycling2▲ 4.5×5 topics
  37. Particulate Matter2▲ 11×2 topics
  38. Pharmaceuticals2▲ 23×2 topics
  39. Metal Toxicity2▲ 24×2 topics
  40. Drinking Water2▲ 38×2 topics

Which research topics does Impact Assessment publish most on?

By volume in 2022-now: Per- and polyfluoroalkyl substances research, Toxic Organic Pollutants Impact, Effects and risks of endocrine disrupting chemicals and Environmental Sustainability and Education.

Per- and polyfluoroalkyl…4Per- and polyfluoroalkyl substances research: 4 fractional worksToxic Organic Pollutants Impact: 4 fractional worksEffects and risks of endocrine disrupting chemicals: 4 fractional worksEnvironmental Sustainability and Education: 2 fractional worksAir Quality and Health Impacts: 2 fractional worksEnvironmental Toxicology and Ecotoxicology: 1 fractional worksEducation, Law, and Society: 1 fractional worksAtmospheric chemistry and aerosols: 1 fractional worksAdvanced oxidation water treatment: 1 fractional worksPharmaceutical and Antibiotic Environmental Impacts: 1 fractional works
Environmental ChemistryHealth, Toxicology and MutagenesisManagement, Monitoring, Policy and LawPolitical Science and International Relations3 others

Area is fractional works; colour is the subfield each topic belongs to.

  1. 1 Per- and polyfluoroalkyl substances research Environmental Chemistry 4 works
  2. 2 Toxic Organic Pollutants Impact Health, Toxicology and Mutagenesis 4 works
  3. 3 Effects and risks of endocrine disrupting chemicals Health, Toxicology and Mutagenesis 4 works
  4. 4 Environmental Sustainability and Education Management, Monitoring, Policy and Law 2 works
  5. 5 Air Quality and Health Impacts Health, Toxicology and Mutagenesis 2 works
  6. 6 Environmental Toxicology and Ecotoxicology Health, Toxicology and Mutagenesis 1 works
  7. 7 Education, Law, and Society Political Science and International Relations 1 works
  8. 8 Atmospheric chemistry and aerosols Atmospheric Science 1 works
  9. 9 Advanced oxidation water treatment Water Science and Technology 1 works
  10. 10 Pharmaceutical and Antibiotic Environmental Impacts Pollution 1 works

How open and international is its research?

Against the world's own shares: the tick on each track. Both are shares of its output, so they sit on one scale and can be read against each other as well as against the world.

openly available39.7%not open60.3%

World: 40% of research is openly available.

with international co-authors42.3%domestic only57.7%

World: 18% is written across borders.

How has Impact Assessment's research output changed?

Output in 2022-2025 was 54% higher than in 2018-2021.

still counting1990200020102020
grewheldshrank

The same series as a ribbon: one cell per year, darker for more. The line above answers how much; this answers when.

Its share of all research

Growing output can still be a shrinking share: all of science grows. This is Impact Assessment as a percentage of every work published that year, 0.00042% in 2024.

still counting0.00050%0.0010%0.0015%Impact Assessment0.00057% in 202519801990200020102020

Fractional works of Impact Assessment over all fractional works that year. How the balance of science has shifted.

How much of it reaches the world top 10%

Year by year, against all institutions in the same year.

still counting10%20%Impact Assessment16.7% in 2025all institutions10.0% in 20252020

Of each year's output, the share that reached the world's 10% most cited for its field and year. Peak 16.7% in 2025.

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Impact Assessment on Science Explorer

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