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University · Iowa City · United States

American College Testing

In research, American College Testing stands highest in Social Sciences (#5,877 of 14,833 worldwide), over all time.

act.orgROR OpenAlex
World rank, all time
#18,614
of 34,923
Rank in United States
#3,866
of 7,310
Research works
236
▼ 84% vs 2018-21
Citations
9.3k
39.4 per fractional work
Top-10% rate
18.8%
all institutions 10.0%
vs its own fields
1.18×
1.00× is exactly expected
Open access
14%
world 40%
International
9%
world 18%
American College Testing

What is American College Testing 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
Social SciencesDomain #5,877 of 14,833 18.1%147

Each strip is that field's whole ranked pool, with the notch where American College Testing 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 American College Testing work in?

In all years, 62% of research at American College Testing is in Social Sciences, 28% in Physical Sciences. Its largest fields are Social Sciences (31%), Decision Sciences (16%), Psychology (11%). It does 2.9× the world's share of Social Sciences.

Social Sciences: 147 fractional works · 62.2% of its workSocial Sciences: 74 fractional works · 31.2% of its workEducation: 46 fractional works · 19.6% of its workSafety Research: 14 fractional works · 6.0% of its workSociology and Political Science: 4 fractional works · 1.8% of its workGender Studies: 3 fractional works · 1.4% of its workLaw: 2 fractional works · 1.0% of its workDemography: 1 fractional works · 0.6% of its workLibrary and Information Sciences: 1 fractional works · 0.5% of its workPolitical Science and International Relations: 0 fractional works · 0.2% of its workSmaller subfields together: 0 fractional works · 0.2% of its workDecision Sciences: 37 fractional works · 15.5% of its workManagement Science and Operations Research: 27 fractional works · 11.5% of its workStatistics, Probability and Uncertainty: 9 fractional works · 3.7% of its workInformation Systems and Management: 1 fractional works · 0.2% of its workSmaller subfields together: 0 fractional works · 0.1% of its workPsychology: 26 fractional works · 11.2% of its workExperimental and Cognitive Psychology: 7 fractional works · 3.1% of its workSocial Psychology: 7 fractional works · 2.9% of its workDevelopmental and Educational Psychology: 7 fractional works · 2.8% of its workClinical Psychology: 2 fractional works · 1.0% of its workApplied Psychology: 2 fractional works · 0.9% of its workGeneral Psychology: 1 fractional works · 0.5% of its workArts and Humanities: 5 fractional works · 1.9% of its workLiterature and Literary Theory: 1 fractional works · 0.5% of its workPhilosophy: 1 fractional works · 0.4% of its workHistory and Philosophy of Science: 1 fractional works · 0.4% of its workVisual Arts and Performing Arts: 1 fractional works · 0.2% of its workSmaller subfields together: 1 fractional works · 0.4% of its workBusiness, Management and Accounting: 3 fractional works · 1.4% of its workOrganizational Behavior and Human Resource Management: 2 fractional works · 0.8% of its workManagement of Technology and Innovation: 1 fractional works · 0.4% of its workSmaller subfields together: 0 fractional works · 0.1% of its workEconomics, Econometrics and Finance: 2 fractional works · 1.0% of its workEconomics and Econometrics: 2 fractional works · 1.0% of its workPhysical Sciences: 67 fractional works · 28.5% of its workComputer Science: 22 fractional works · 9.2% of its workComputer Networks and Communications: 7 fractional works · 2.8% of its workInformation Systems: 6 fractional works · 2.4% of its workArtificial Intelligence: 5 fractional works · 2.1% of its workComputer Science Applications: 3 fractional works · 1.5% of its workSoftware: 1 fractional works · 0.3% of its workSmaller subfields together: 1 fractional works · 0.3% of its workEngineering: 20 fractional works · 8.5% of its workCivil and Structural Engineering: 11 fractional works · 4.7% of its workMedia Technology: 3 fractional works · 1.2% of its workSafety, Risk, Reliability and Quality: 2 fractional works · 1.0% of its workComputational Mechanics: 1 fractional works · 0.4% of its workMechanical Engineering: 1 fractional works · 0.3% of its workSmaller subfields together: 2 fractional works · 0.9% of its workMathematics: 19 fractional works · 8.0% of its workStatistics and Probability: 16 fractional works · 7.0% of its workApplied Mathematics: 1 fractional works · 0.6% of its workSmaller subfields together: 1 fractional works · 0.4% of its workEnvironmental Science: 3 fractional works · 1.1% of its workEnvironmental Engineering: 1 fractional works · 0.4% of its workPollution: 1 fractional works · 0.4% of its workIndustrial and Manufacturing Engineering: 0 fractional works · 0.2% of its workSmaller subfields together: 0 fractional works · 0.1% of its workMaterials Science: 2 fractional works · 0.7% of its workMaterials Chemistry: 1 fractional works · 0.5% of its workSmaller subfields together: 0 fractional works · 0.2% of its workPhysics and Astronomy: 1 fractional works · 0.5% of its workStatistical and Nonlinear Physics: 1 fractional works · 0.4% of its workSmaller subfields together: 0 fractional works · 0.1% of its workEarth and Planetary Sciences: 1 fractional works · 0.4% of its workAtmospheric Science: 1 fractional works · 0.3% of its workSmaller subfields together: 0 fractional works · 0.1% of its workChemistry: 0 fractional works · 0.1% of its workHealth Sciences: 13 fractional works · 5.7% of its workMedicine: 8 fractional works · 3.4% of its workPublic Health, Environmental and Occupational Health: 6 fractional works · 2.6% of its workFamily Practice: 1 fractional works · 0.2% of its workOrthopedics and Sports Medicine: 1 fractional works · 0.2% of its workSmaller subfields together: 1 fractional works · 0.3% of its workHealth Professions: 5 fractional works · 2.3% of its workGeneral Health Professions: 3 fractional works · 1.3% of its workOccupational Therapy: 1 fractional works · 0.6% of its workSmaller subfields together: 1 fractional works · 0.4% of its workLife Sciences: 9 fractional works · 3.7% of its workAgricultural and Biological Sciences: 6 fractional works · 2.7% of its workGeneral Agricultural and Biological Sciences: 5 fractional works · 2.0% of its workFood Science: 2 fractional works · 0.7% of its workSmaller subfields together: 0 fractional works · 0.0% of its workNeuroscience: 2 fractional works · 0.8% of its workCognitive Neuroscience: 2 fractional works · 0.7% of its workSmaller subfields together: 0 fractional works · 0.1% of its workBiochemistry, Genetics and Molecular Biology: 0 fractional works · 0.1% of its workPharmacology, Toxicology and Pharmaceutics: 0 fractional works · 0.1% of its workALL ITS WORKAmerican CollegeTesting236fractional works, all years
Life Sciences4%Physical Sciences28%Health Sciences6%Social Sciences62%

Each ring splits the one inside it: the four domains of science, their fields, their subfields. Size is fractional works in all years. 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 21 fields, with their numbers
    1. Social Sciences7431.2%
    2. Decision Sciences3715.5%
    3. Psychology2611.2%
    4. Arts and Humanities51.9%
    5. Business, Management and Accounting31.4%
    6. Economics, Econometrics and Finance21.0%
    1. Computer Science229.2%
    2. Engineering208.5%
    3. Mathematics198.0%
    4. Environmental Science31.1%
    5. Materials Science20.7%
    6. Physics and Astronomy10.5%
    7. Earth and Planetary Sciences10.4%
    8. Chemistry00.1%
    1. Medicine83.4%
    2. Health Professions52.3%
    3. Dentistry00.0%
    1. Agricultural and Biological Sciences62.7%
    2. Neuroscience20.8%
    3. Biochemistry, Genetics and Molecular Biology00.1%
    4. Pharmacology, Toxicology and Pharmaceutics00.1%
All of science, and how each field's share has moved since 1950: the Science domain explorer

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.

Who are the top researchers at American College Testing?

Ranked on the quality score, G. Hanson, Nancy S. Cole and S Lutz lead among researchers whose main affiliation is American College Testing.

  1. 1 G. Hanson United States · #591,255 worldwide 5.4k citations · 148 works
  2. 2 Nancy S. Cole United States · #641,293 worldwide 2.4k citations · 68 works
  3. 3 S Lutz United States · #1,117,305 worldwide 258 citations · 37 works
  4. 4 Leo A. Munday United States · #1,672,306 worldwide 221 citations · 24 works
  5. 5 Oscar T. Lenning United States · #2,678,324 worldwide 1.1k citations · 62 works
  6. 6 Dale J. Prediger United States · #2,707,672 worldwide 3.6k citations · 117 works
  7. 7 Bradley A. Hanson United States · #2,779,994 worldwide 1.3k citations · 67 works
  8. 8 E. James Maxey United States · #3,391,755 worldwide 134 citations · 18 works
  9. 9 Richard J. Noeth United States · #3,497,936 worldwide 939 citations · 40 works
  10. 10 Lingjia Zeng United States · #3,609,512 worldwide 175 citations · 16 works
All ranked researchers at American College Testing

What are the most cited papers from American College Testing?

The most cited paper from American College Testing is "Effects of sample size, estimation methods, and model specification on structural equation modeling fit indexes" (Xitao Fan, Bruce Thompson, Lin Wang, 1999), with 1,677 citations. Next come "Enhancing Students' Engagement by Increasing Teachers' Autonomy Support" (1,602) and "Coefficient Kappa: Some Uses, Misuses, and Alternatives" (1,583).

Most cited papers
#PaperReleasedCitations
1 Effects of sample size, estimation methods, and model specification on structural equation modeling fit indexes Xitao Fan, Bruce Thompson, Lin Wang · Structural Equation Modeling A Multidisciplinary Journal 1999 1,677
2 Enhancing Students' Engagement by Increasing Teachers' Autonomy Support Johnmarshall Reeve, Hyungshim Jang, Dan Carrell et al. · Motivation and Emotion Jun 2004 1,602
3 Coefficient Kappa: Some Uses, Misuses, and Alternatives Robert L. Brennan, Dale J. Prediger · Educational and Psychological Measurement Open access Oct 1981 1,583
4 Dimensions underlying Holland's hexagon: Missing link between interests and occupations? Dale J. Prediger · Journal of Vocational Behavior Dec 1982 553
5 Statistical Inference for Coefficient Alpha Leonard S. Feldt, David J. Woodruff, Fathi A. Salih · Applied Psychological Measurement Open access Mar 1987 529
All 60 most cited papers, with filters and sorting

Which keywords describe research at American College Testing?

By fractional works in all years, weighted toward what it does more of than the world: Structural Equation Modeling, Student Engagement, Career Development, STEM Education, Factor Analysis, Measurement Invariance, Educational Inequality and Gender Disparities.

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

Size is fractional works in all years 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. Structural Equation Modeling18▲ 57×3 topics
  2. Student Engagement18▲ 30×7 topics
  3. Career Development17▲ 83×4 topics
  4. STEM Education16▲ 24×7 topics
  5. Factor Analysis16▲ 609×1 topic
  6. Measurement Invariance16▲ 609×1 topic
  7. Educational Inequality13▲ 90×2 topics
  8. Academic Performance13▲ 76×2 topics
  9. Gender Disparities13▲ 283×1 topic
  10. Social Cognitive Theory13▲ 150×1 topic
  11. Diversity11▲ 26×4 topics
  12. Social Support10▲ 9.5×3 topics
  13. College Retention10▲ 198×1 topic
  14. First-Generation Students10▲ 198×1 topic
  15. Education10▲ 3.1×16 topics
  16. Learning Outcomes10▲ 18×4 topics
  17. Educational Research8▲ 49×3 topics
  18. Principal Component Analysis8▲ 25×3 topics
  19. Regression Analysis8▲ 64×3 topics
  20. Higher Education8▲ 9.1×9 topics
  21. Student Perceptions8▲ 25×5 topics
  22. Academic Achievement8▲ 23×9 topics
  23. Multicollinearity7▲ 86×1 topic
  24. Outlier Detection7▲ 36×1 topic
  25. Assessment7▲ 47×4 topics
  26. Personality Traits7▲ 25×5 topics
  27. Lifelong Learning6▲ 18×3 topics
  28. Statistical Methods6▲ 61×3 topics
  29. Johnson Noise6▲ 518×1 topic
  30. Secure Communication6▲ 474×1 topic
  31. Teaching Strategies6▲ 16×4 topics
  32. Reflective Practice6▲ 14×4 topics
  33. Reliability Analysis6▲ 24×3 topics
  34. Student Motivation6▲ 23×2 topics
  35. Competency-Based Education5▲ 28×2 topics
  36. Evidence-Based Practice5▲ 13×5 topics
  37. Assessment Methods5▲ 21×2 topics
  38. Self-Efficacy5▲ 11×6 topics
  39. Standards5▲ 32×2 topics
  40. Teacher Preparation5▲ 29×3 topics

Which research topics does American College Testing publish most on?

By volume in 2022-now: Economic, Social, and Health Studies, Concrete Properties and Behavior, Infrastructure Maintenance and Monitoring and Asphalt Pavement Performance Evaluation.

Economic, Social, and He…0Economic, Social, and Health Studies: 0 fractional worksConcrete Properties and …0Concrete Properties and Behavior: 0 fractional worksInfrastructure Maintenance and Monitoring: 0 fractional worksAsphalt Pavement Performance Evaluation: 0 fractional worksGeotechnical Engineering and Underground Structures: 0 fractional works
Economics and EconometricsCivil and Structural Engineering

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

  1. 1 Economic, Social, and Health Studies Economics and Econometrics 0 works
  2. 2 Concrete Properties and Behavior Civil and Structural Engineering 0 works
  3. 3 Infrastructure Maintenance and Monitoring Civil and Structural Engineering 0 works
  4. 4 Asphalt Pavement Performance Evaluation Civil and Structural Engineering 0 works
  5. 5 Geotechnical Engineering and Underground Structures Civil and Structural Engineering 0 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 available14.2%not open85.8%

World: 40% of research is openly available.

with international co-authors8.8%domestic only91.2%

World: 18% is written across borders.

How has American College Testing's research output changed?

Output in 2022-2025 was 84% lower 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 American College Testing as a percentage of every work published that year, 0.0000060% in 2024.

still counting0.0010%0.0020%0.0030%American College Testing0.0000056% in 202519801990200020102020

Fractional works of American College Testing over all fractional works that year. How the balance of science has shifted.

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American College Testing on Science Explorer

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Research measures only: rankings here say nothing about teaching, admissions or student experience. Comparable institutions and collaboration partners have tabs of their own, above.

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