The DOI matches its Crossref record; 79 of the 80 references it cites were found in a registry or an index.
Models for Sample Selection Bias
Abstract
When observations in social research are selected so that they are not independent of the outcome variables in a study, sample selection leads to biased inferences about social processes. Nonrandom selection is both a source of bias in empirical research and a fundamental aspect of many social processes. This chapter reviews models that attempt to take account of sample selection and their applications in research on labor markets, schooling, legal processes, social mobility, and social networks. Variants of these models apply to outcome variables that are censored or truncated—whether explicitly or incidentally—and include the tobit model, the standard selection model, models for treatment effects in quasi-experimental designs, and endogenous switching models. Heckman’s two-stage estimator is the most widely used approach to selection bias, but its results may be sensitive to violations of its assumptions about the way that selection occurs. Recent econometric research has developed a wide variety of promising approaches to selection bias that rely on considerably weaker assumptions. These include a number of semiand nonparametric approaches to estimating selection models, the use of panel data, and the analyses of bounds of estimates. The large number of available methods and the difficulty of modelling selection indicate that researchers should be explicit about the assumptions behind their methods and should present results that derive from a variety of methods.
Overview
Integrity signals
Registry
Cites
Statistics
Verification
Claims the paper makes
Claims other papers make about this one
Each is checked against this paper’s own text: does it say what the citing paper says it does?
In the citing paper
“Sample selection bias occurs when the selection of observations into a sample is not independent of the outcome”
From Endogenous Selection Bias: The Problem of Conditioning on a Collider Variable (2014) · cites this paper as Winship & Mare 1992
In the citing paper
“Surveys of sample selection bias in sociology tend to emphasize examples where selection is affected by the treatment or the outcome, i.e., where sample selection occurs after treatment”
From Endogenous Selection Bias: The Problem of Conditioning on a Collider Variable (2014) · cites this paper as Winship & Mare 1992
In the citing paper
“Our sampling strategy may have introduced selection bias [78]: recruitment through advocacy organizations may capture more resource-aware researchers than those struggling in isolation.”
From "I Don't Trust Any Professional Research Tool": A Re-Imagination of Knowledge Production Workflows by, with, and for Blind and Low-Vision Researchers (2026) · cites this paper as [78]
Citations
Cites
The central role of the propensity score in observational studies for causal effects
ROSENBAUM, P. R., & RUBIN, D. B. (1983) · Biometrika · doi:10.1093/biomet/70.1.41 · Cited by 31,241
Sample Selection Bias as a Specification Error
Heckman, J. J. (1979) · Econometrica · doi:10.2307/1912352 · Cited by 28,779
Statistical Analysis With Missing Data
Lahiff, M., Little, R. J. A., & Rubin, D. B. (1989) · Journal of the American Statistical Association · doi:10.2307/2289883 · Cited by 17,385
Limited-Dependent and Qualitative Variables in Econometrics
Maddala, G. S. (1983) · Cambridge University Press eBooks · doi:10.1017/cbo9780511810176 · Cited by 13,268
The Statistical Analysis of Failure Time Data.
Aitkin, M. A., Kalbfleisch, J. D., & Prentice, R. L. (1981) · Biometrics · doi:10.2307/2530581 · Cited by 9,875
Estimation of Relationships for Limited Dependent Variables
Tobin, J. (1958) · Econometrica · doi:10.2307/1907382 · Cited by 6,996
Statistics and Causal Inference
Holland, P. W. (1986) · Journal of the American Statistical Association · doi:10.1080/01621459.1986.10478354 · Cited by 5,293
Applied nonparametric regression
(1991) · Choice Reviews Online · doi:10.5860/choice.29-0364 · Cited by 2,606
Bayesian inference for causal effects: The role of randomization
Rubin, D. B. (1978) · The Annals of Statistics · doi:10.1214/aos/1176344064 · Cited by 2,503
Root-N-Consistent Semiparametric Regression
Robinson, P. M. (1988) · Econometrica · doi:10.2307/1912705 · Cited by 2,450
Cited by
Sorted by citations
Items 201–300 of 809
Religious Conservatism and Women’s Market Behavior Following Marriage and Childbirth
Glass, J., & Nath, L. (2006) · Journal of Marriage and the Family · doi:10.1111/j.1741-3737.2006.00278.x · Cited by 65
Taylor, R. B. (2016) · New York University Press eBooks · doi:10.18574/nyu/9780814725498.001.0001 · Cited by 65
Mode use in long-distance travel
Reichert, A., & Holz‐Rau, C. (2015) · Journal of Transport and Land Use · doi:10.5198/jtlu.2015.576 · Cited by 64
Clocking In: The Organization of Work Time and Health in the United States
Kleiner, S., & Pavalko, E. K. (2010) · Social Forces · doi:10.1353/sof.0.0301 · Cited by 71
Measuring Morbidity: Disease Counts, Binary Variables, and Statistical Power
Ferraro, K. F., & Wilmoth, J. M. (2000) · The Journals of Gerontology Series B · doi:10.1093/geronb/55.3.s173 · Cited by 64
Master or Servant? Common Agency and the Political Economy of IMF Lending
Copelovitch, M. S. (2010) · doi:10.7910/dvn/vx5nxo · Cited by 63
Mellewigt, T., Ehrmann, T., & Decker, C. (2011) · Journal of Retailing · doi:10.1016/j.jretai.2011.01.001 · Cited by 63
Fernandez, R. M. (2010) · SSRN Electronic Journal · doi:10.2139/ssrn.1576608 · Cited by 62
Gender biases within Artificial Intelligence and ChatGPT: Evidence, Sources of Biases and Solutions
Ho, J. Q. H., Hartanto, A., Koh, A., & Majeed, N. M. (2025) · Computers in Human Behavior Artificial Humans · doi:10.1016/j.chbah.2025.100145 · Cited by 83
Tang, H. V., & Chang, C.-C. (2013) · Review of Quantitative Finance and Accounting · doi:10.1007/s11156-013-0427-z · Cited by 61
A THRESHOLD MODEL OF COLLECTIVE CRIME
McGloin, J. M., & Rowan, Z. (2015) · Criminology · doi:10.1111/1745-9125.12077 · Cited by 60
Pseudo-Precision? Precise Forecasts and Impression Management in Managerial Earnings Forecasts
Hayward, M. L. A., & Fitza, M. (2016) · Academy of Management Journal · doi:10.5465/amj.2014.0304 · Cited by 60
Resilience: resources and strategies of SMEs in a new theoretical framework
Alberti, F. G., Ferrario, S., & Pizzurno, E. (2018) · International Journal of Learning and Intellectual Capital · doi:10.1504/ijlic.2018.091969 · Cited by 60
Measuring funds of knowledge: Contributions to Latina/o students’ academic and nonacademic outcomes
Rios-Aguilar, C. (2010) · Teachers College Record: The Voice of Scholarship in Education · doi:10.1177/016146811011200805 · Cited by 59
Entrepreneurship as an Evolutionary Process: Research Progress and Challenges
Martinez, M. A., Yang, T., & Aldrich, H. E. (2011) · Entrepreneurship Research Journal · doi:10.2202/2157-5665.1009 · Cited by 59
Lehoucq, F., & Pérez‐Liñán, A. (2013) · Comparative Political Studies · doi:10.1177/0010414013488561 · Cited by 68
Dixon, M., & Martin, A. W. (2012) · American Sociological Review · doi:10.1177/0003122412460649 · Cited by 58
Recent Methodological Advances Relevant to Activity and Travel Behavior Analysis
Bhat, C. R. (2002) · Cited by 58
Social network and social capital in leadership and management research: A review of causal methods
Li, M. (2013) · The Leadership Quarterly · doi:10.1016/j.leaqua.2013.04.005 · Cited by 57
Matthews, Y., Riccardo Scarpa, A., & Marsh, D. (2017) · Ecological Economics · doi:10.1016/j.ecolecon.2017.03.031 · Cited by 57
Zhang, Y., & Hannum, E. (2015) · Chinese Journal of Sociology · doi:10.1177/2057150x14568769 · Cited by 56
The Effects of Age at Home Leaving and Pathways from Home on Educational Attainment
White, L. K., & Lacy, N. L. (1997) · Journal of Marriage and the Family · doi:10.2307/353797 · Cited by 56
The Personal Foundations of Political Tolerance towards Immigrants
Freitag, M., & Rapp, C. H. (2014) · Journal of Ethnic and Migration Studies · doi:10.1080/1369183x.2014.924847 · Cited by 54
Adolescents' exposure to sexy media does not hasten the initiation of sexual intercourse.
Steinberg, L. D., & Monahan, K. C. (2010) · Developmental Psychology · doi:10.1037/a0020613 · Cited by 54
Assessment of Neighborhood Context in a Nationally Representative Study
Cornwell, E. Y., & Cagney, K. A. (2014) · The Journals of Gerontology Series B · doi:10.1093/geronb/gbu052 · Cited by 54
A General Instrumental Variable Framework for Regression Analysis with Outcome Missing Not at Random
Tchetgen, E. J. T., & Wirth, K. E. (2017) · Biometrics · doi:10.1111/biom.12670 · Cited by 54
Nonresponse and Selection Bias in Treatment Follow-up Studies
Gerstein, D. R., & Johnson, R. A. (2000) · Substance Use & Misuse · doi:10.3109/10826080009148429 · Cited by 54
Bai, C., Zhan, J., Wang, H., Yang, Z., Liu, H., Liu, W., Wang, C., Chu, X., & Teng, Y. (2023) · Energy Policy · doi:10.1016/j.enpol.2023.113617 · Cited by 53
An inconvenient dataset: bias and inappropriate inference with the multilevel model
Lucas, S. R. (2013) · Quality & Quantity · doi:10.1007/s11135-013-9865-x · Cited by 53
Case Selection and the Study of Judicial Politics
Kastellec, J., & Lax, J. R. (2008) · Journal of Empirical Legal Studies · doi:10.1111/j.1740-1461.2008.00129.x · Cited by 53
Factors Affecting the Uptake of HIV Testing among Men: A Mixed-Methods Study in Rural Burkina Faso
Allegri, M. D., Agier, I., Tiendrébeogo, J., Louis, V. R., Yé, M., Mueller, O., & Sarker, M. (2015) · PLoS ONE · doi:10.1371/journal.pone.0130216 · Cited by 53
Statistics In Sociology, 1950-2000: A Selective Review
Raftery, A. E. (2001) · Sociological Methodology · doi:10.1111/0081-1750.00088 · Cited by 53
Employment Outcomes among AFDC Recipients Treated for Substance Abuse in Washington State
Wickizer, T. M., Campbell, K. M., Krupski, A., & Stark, K. D. (2000) · Milbank Quarterly · doi:10.1111/1468-0009.00186 · Cited by 53
Retirement and death in office of U.S. Supreme Court justices
Stolzenberg, R. M., & Lindgren, J. T. (2010) · Demography · doi:10.1353/dem.0.0100 · Cited by 50
The Truncation-by-Death Problem
McConnell, S., Stuart, E. A., & Devaney, B. (2008) · Evaluation Review · doi:10.1177/0193841x07309115 · Cited by 52
GROUP SIZE AND THE LOGIC OF COLLECTIVE ACTION:
Sandell, R., & Stern, C. (1998) · Rationality and Society · doi:10.1177/104346398010003003 · Cited by 52
What Should We Do about Source Selection in Event Data? Challenges, Progress, and Possible Solutions
Jenkins, J. C., & Maher, T. V. (2016) · International Journal of Sociology · doi:10.1080/00207659.2016.1130419 · Cited by 51
The Effect of Family Member Migration on Education and Work Among Nonmigrant Youth in Mexico
Halpern-Manners, A. (2011) · Demography · doi:10.1007/s13524-010-0010-3 · Cited by 51
Labor market penalties for foreign degrees among college educated immigrants
Arbeit, C. A., & Warren, J. R. (2013) · Social Science Research · doi:10.1016/j.ssresearch.2013.01.001 · Cited by 51
Jacob, M., Kühhirt, M., & Rodrigues, M. (2019) · European Sociological Review · doi:10.1093/esr/jcz022 · Cited by 51
O’Connell, P. J. (2002) · European Sociological Review · doi:10.1093/esr/18.1.65 · Cited by 51
Why Targets Matter: Toward a More Inclusive Model of Collective Violence
Martin, A. W., Mccarthy, J., & McPhail, C. (2009) · American Sociological Review · doi:10.1177/000312240907400507 · Cited by 49
Teaching Tolerance? Associational Diversity and Tolerance Formation
Rapp, C. H., & Freitag, M. (2014) · Political Studies · doi:10.1111/1467-9248.12142 · Cited by 50
Chakravorty, S. (2003) · The Journal of Development Studies · doi:10.1080/00220380412331293797 · Cited by 50
Just Another Crime? Examining Disparity in Homicide Sentencing
Auerhahn, K. (2007) · Sociological Quarterly · doi:10.1111/j.1533-8525.2007.00079.x · Cited by 49
An American Dream Unfulfilled: The Limited Mobility of Mexican Americans
Livingston, G., & Kahn, J. R. (2002) · Social Science Quarterly · doi:10.1111/1540-6237.00129 · Cited by 49
Predicting the Future: Art and Algorithms
Róna‐Tas, Á. (2020) · Socio-Economic Review · doi:10.1093/ser/mwaa040 · Cited by 50
Race and Women's Income Trajectories: Employment, Marriage, and Income Security Over the Life Course
Willson, A. E. (2003) · Social Problems · doi:10.1525/sp.2003.50.1.87 · Cited by 48
And Their Children after Them? The Effect of College on Educational Reproduction
Lawrence, M., & Breen, R. (2016) · American Journal of Sociology · doi:10.1086/687592 · Cited by 46
An evaluation of synthetic data augmentation for mitigating covariate bias in health data
Juwara, L., El‐Hussuna, A., & Emam, K. E. (2024) · Patterns · doi:10.1016/j.patter.2024.100946 · Cited by 58
Mitchell, M. M., Fahmy, C., Clark, K. J., & Pyrooz, D. C. (2021) · Journal of Quantitative Criminology · doi:10.1007/s10940-021-09516-7 · Cited by 48
Clark, S. J., & Houle, B. C. (2014) · PLoS ONE · doi:10.1371/journal.pone.0112563 · Cited by 45
A Comparison of Organizational Structure and Pedagogical Approach: Online versus Face-to-face
McFarlane, D. (2011) · The Journal of Educators Online · doi:10.9743/jeo.2011.1.1 · Cited by 45
Neighborhood research from a spatially oriented strengths perspective
Mowbray, C. T., Woolley, M. E., Grogan‐Kaylor, A. C., Gant, L. M., Gilster, M. E., & Shanks, T. (2007) · Journal of Community Psychology · doi:10.1002/jcop.20170 · Cited by 45
Wage Discrimination over the Life Course: A Comparison of Explanations
Maume, D. J. (2004) · Social Problems · doi:10.1525/sp.2004.51.4.505 · Cited by 45
Determinants of women's financial inclusion: Evidence from India
Govindapuram, S., Bhupatiraju, S., & Sirohi, R. A. (2022) · Annals of Public and Cooperative Economics · doi:10.1111/apce.12376 · Cited by 54
Falling Further Behind? Child Support Arrears and Fathers’ Labor Force Participation
Miller, D. P., & Mincy, R. (2012) · Social Service Review · doi:10.1086/668761 · Cited by 45
Schweitzer, F. M., Palmié, M., & Gassmann, O. (2016) · R and D Management · doi:10.1111/radm.12252 · Cited by 44
Corporate Governance and Performance: Controlling for Sample Selection Bias and EndogeneityPreprint
Renders, A., & Gaeremynck, A. (2006) · SSRN Electronic Journal · doi:10.2139/ssrn.888770 · Cited by 44
Shaping tolerant attitudes towards immigrants: The role of welfare state expenditures
Rapp, C. H. (2016) · Journal of European Social Policy · doi:10.1177/0958928716672181 · Cited by 43
Hogan, D. R., Salomon, J. A., Canning, D., Hammitt, J. K., Zaslavsky, A. M., & Bärnighausen, T. (2012) · Sexually Transmitted Infections · doi:10.1136/sextrans-2012-050636 · Cited by 43
Hennessy, M. H., Römer, D., Valois, R. F., Vanable, P. A., Carey, M. P., STANTON, B. F., Brown, L. K., DiClemente, R. J., & Salazar, L. F. (2012) · American Journal of Public Health · doi:10.2105/ajph.2012.300856 · Cited by 42
Estimating causal effects : using experimental and observational designs : a think tank white paper
Schneider, B. (2007) · Cited by 42
Walpole, S. C., Pearson, D., Coad, J., & Barna, S. (2015) · Medical Teacher · doi:10.3109/0142159x.2015.1112897 · Cited by 41
Doğan, H. P., Aydoğdu, M. H., Sevinç, M. R., & Cançelik, M. (2020) · Agriculture · doi:10.3390/agriculture10050152 · Cited by 40
Heterogeneous Treatment Effects in the Presence of Self-Selection: A Propensity Score Perspective
Zhou, X., & Xie, Y. (2016) · Sociological Methodology · doi:10.1177/0081175019862593 · Cited by 37
Employee Awareness of Family Leave Benefits: The Effects of Family, Work, and Gender
Baird, C. L., & Reynolds, J. R. (2004) · Sociological Quarterly · doi:10.1111/j.1533-8525.2004.tb00015.x · Cited by 40
Income of the Urban Elderly in Postreform China: Political Capital, Human Capital, and the State
Raymo, J. M., & Xie, Y. (2000) · Social Science Research · doi:10.1006/ssre.1999.0649 · Cited by 40
Changes in Grandchildren’s Adult Role Statuses and Their Relationships With Grandparents
Monserud, M. A. (2010) · Journal of Family Issues · doi:10.1177/0192513x10384466 · Cited by 40
Technology, Incentives, or Both? Factors Related to Level of Hospital Health Information Exchange
Lin, S. C., Everson, J., & Adler‐Milstein, J. (2018) · Health Services Research · doi:10.1111/1475-6773.12838 · Cited by 39
Estimation of a regression spline sample selection model
Marra, G., & Radice, R. (2012) · Computational Statistics & Data Analysis · doi:10.1016/j.csda.2012.12.010 · Cited by 39
König, T., Finke, D., & Daimer, S. (2005) · European Union Politics · doi:10.1177/1465116505054833 · Cited by 39
Perceived Job Insecurity and Health: Do Duration and Timing Matter?
Glavin, P. (2015) · Sociological Quarterly · doi:10.1111/tsq.12087 · Cited by 38
Kühhirt, M., & Klein, M. (2019) · Social Science Research · doi:10.1016/j.ssresearch.2019.102391 · Cited by 44
Correcting surveys for non-response and measurement error using auxiliary information
Jackman, S. D. (1999) · Electoral Studies · doi:10.1016/s0261-3794(98)00039-0 · Cited by 38
Dubrow, J. K., & adams, J. (2010) · International Review for the Sociology of Sport · doi:10.1177/1012690210384660 · Cited by 38
The Concept of Guan in the Chinese Parent-Child Relationship
Wu, M.-Y. (2012) · Quality of life in Asia · doi:10.1007/978-94-007-4081-5_2 · Cited by 37
McCarthy, J. D., Martin, A., & McPhail, C. (2007) · Social Problems · doi:10.1525/sp.2007.54.3.274 · Cited by 37
An Extension of the Sorensen-Kalleberg Theory of the Labor Market Matching and Attainment Processes
Eliason, S. R. (1995) · American Sociological Review · doi:10.2307/2096386 · Cited by 37
Getting Paid: Wage Arrears and Stratification in Russia
Gerber, T. P. (2006) · American Journal of Sociology · doi:10.1086/499511 · Cited by 37
Takele, A. (2010) · CGSPace A Repository of Agricultural Research Outputs (Consultative Group for International Agricultural Research) · Cited by 37
Tegegne, M. A. (2015) · Social Science Quarterly · doi:10.1111/ssqu.12212 · Cited by 35
Jang, C., & Sung, W. (2021) · Telematics and Informatics · doi:10.1016/j.tele.2021.101715 · Cited by 36
Berufliche Weiterbildung — arbeitsmarktsoziologische Perspektiven und empirische Befunde
Becker, R., & Hecken, A. E. (2008) · VS Verlag für Sozialwissenschaften eBooks · doi:10.1007/978-3-531-91192-2_5 · Cited by 35
Hennessy, M. H., Bleakley, A., Fishbein, M., & Jordan, A. (2007) · AIDS and Behavior · doi:10.1007/s10461-007-9272-1 · Cited by 35
An Integrated Analysis of Migration and Remittances: Modeling Migration as a Mechanism for Selection
Garip, F. (2012) · Population Research and Policy Review · doi:10.1007/s11113-012-9246-5 · Cited by 35
Haberfeld, Y., Cohen, Y., Kalter, F., & Kogan, I. (2010) · International Journal of Comparative Sociology · doi:10.1177/0020715210377157 · Cited by 35
The use of quasi-experiments in the social sciences: a content analysis
Aussems, M. E., Boomsma, A., & Snijders, T. A. B. (2009) · Quality & Quantity · doi:10.1007/s11135-009-9281-4 · Cited by 35
Farmers willingness to pay for crop insurance: evidence from Eastern Ghana
Ellis, E., & Ellis, E. (2016) · RePEc: Research Papers in Economics · doi:10.22004/ag.econ.292508 · Cited by 34
The Role of Theory in Experimental Design: Experiments Without Randomization
Gibson, J. L., Caldeira, G. A., & Spence, L. K. (2002) · Political Analysis · doi:10.1093/pan/10.4.362 · Cited by 33
The effect of code-share agreements on the temporal profile of airline fares
Alderighi, M., Gaggero, A. A., & Piga, C. A. (2015) · Transportation Research Part A Policy and Practice · doi:10.1016/j.tra.2015.03.023 · Cited by 33
Butry, D. T. (2009) · Environmental and Ecological Statistics · doi:10.1007/s10651-007-0083-3 · Cited by 33
Self-Selection Bias in Business Ethics Research
James, H. S. (2006) · Business Ethics Quarterly · doi:10.5840/beq200616449 · Cited by 33
Implications of the HIV testing protocol for refusal bias in seroprevalence surveys
Reniers, G., Araya, T., Berhane, Y., Davey, G., & Sanders, E. J. (2009) · BMC Public Health · doi:10.1186/1471-2458-9-163 · Cited by 32
Lecocq, A., Ammi, M., & Bellarbre, É. (2016) · Mesure et évaluation en éducation · doi:10.7202/1035914ar · Cited by 33
Scofflaw bicycling: Illegal but rational
Marshall, W. E., Piatkowski, D. P., & Johnson, A. S. (2017) · Journal of Transport and Land Use · doi:10.5198/jtlu.2017.871 · Cited by 32
Propensity Score–based Methods Versus MTE-based Methods in Causal Inference
Zhou, X., & Xie, Y. (2014) · Sociological Methods & Research · doi:10.1177/0049124114555199 · Cited by 33
Bifurcated Images of the U.S. in Urban China and the Impact of Media Environment
Shi, T., Lü, J., & Aldrich, J. H. (2011) · Political Communication · doi:10.1080/10584609.2011.572479 · Cited by 32
Martin, A. W. (2007) · Social Forces · doi:10.1353/sof.2007.0047 · Cited by 35
Bayesian Geoadditive Sample Selection Models
Wiesenfarth, M., & Kneib, T. (2010) · Journal of the Royal Statistical Society Series C (Applied Statistics) · doi:10.1111/j.1467-9876.2009.00698.x · Cited by 32
Metadata
- Authors
- Winship, C., & Mare, R. D.
- Affiliations
- Northwestern University (US)
- University of Wisconsin–Madison (US)
- ORCID
- Winship, Christopher
- Venue
- Annual Review of Sociology
- Publisher
- Annual Reviews
- Published
- 1992-08
- Volume
- 18
- Issue
- 1
- Pages
- 327-350
- ISSN
- 0360-0572 (ISSN-L)
- 1545-2115
- OpenAlex
- W2011111286
- Cited by
- 812
- References
- 80
- Citations by year
- 2026: 19 · 2025: 17 · 2024: 38 · 2023: 35 · 2022: 39 · 2021: 18 · 2020: 28 · 2019: 15 · 2018: 30 · 2017: 30 · 2016: 34 · 2015: 30 · 2014: 42 · 2013: 42 · 2012: 32
- FWCI
- 8.01
- Type
- journal article
- Language
- en
- Open access
- closed
- Locations
- Annual Review of Sociology (publishedVersion)
- Funders
- National Science Foundation
- National Institutes of Health
- National Institute of Child Health and Human Development
- Topics
- Physical Sciences › Mathematics › Statistics and Probability › Advanced Causal Inference Techniques
- Physical Sciences › Mathematics › Statistics and Probability › Statistical Methods and Bayesian Inference
- Social Sciences › Economics, Econometrics and Finance › Economics and Econometrics › Spatial and Panel Data Analysis
- Keywords
- sample selection bias, selection model, Tobit model, endogenous switching regression, panel data, treatment effect bounds, labor market, school education, legal procedure, social mobility, social networks
About these checks
Registry, retraction, Cites and statistics results are computed, not judged, with one exception: a printed reference that no index lists is read once by a model before it counts as a citation error. Claims are extracted by a model and kept only when their quote appears verbatim in the text; each cited source is then checked, with a model’s help, for whether it says what the claim relies on. Those verdicts can be wrong — read the claim’s quote and the cited source before relying on one.
Statistics and arithmetic are recomputed, not judged.
Confidence bands are shown only for fields calibrated on our annotated test set. None is calibrated yet, so no band is shown.
What counts as a claim ›How we measure confidence ›How we check this ›
Are you an author, or do you see a problem with this page? Request a review