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Explore science by method, field & evidence.

One catalogue of research methods — learn how each one works, when to use it, and what it can’t do.

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8,178 methods11 fields7 method families40 languages
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FieldHealth & Medicine716Psychology570Business & Finance410Engineering330Life Sciences263Education261Research Practice248
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Entries are compiled from published sources for reference. Verifying the accuracy and suitability of any information for your own use remains your responsibility.

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Natural Sciences236
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Environment & Sustainability160
Law30
MethodStatistics1,836AI & ML1,661Decision Sciences932Research Methods1,354Measurement1,745Causal & Evidence532Research Practice118
9 methods in Law · StatisticsClear
Methods at the intersection of your two filters.
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political economy

Central Bank Independence Index

The central bank independence index of Cukierman, Webb, and Neyapti (1992) is the foundational quantitative measure of how insulated a monetary authority is from political control. It reads the central bank's statute and codes dozens of legal provisions into four groups — the appointment, tenure, and dismissal of the c

1 source1992
forensics

Crime Linkage Analysis

Crime linkage analysis is a forensic method that determines whether a series of crimes were committed by the same offender based on behavioral and modus operandi (MO) similarities. Developed systematically by Craig Bennell and colleagues in the early 2000s, crime linkage applies statistical and similarity-matching tech

3 sources2002
field methods

Doctrinal Legal Research

Doctrinal legal research is the foundational methodology of legal scholarship. It systematically identifies, reads, and analyses authoritative legal sources — statutes, case law, constitutional texts, and regulations — to describe, explain, and critique the content and internal logic of legal doctrine. By working withi

2 sources1860
forensic science

Forensic Likelihood Ratio

The Forensic Likelihood Ratio (LR) is a Bayesian framework for quantifying the weight of forensic evidence relative to two competing propositions — typically the prosecution and defence hypotheses. Formally developed and systematised by Colin Aitken and Franco Taroni in their 2004 Wiley monograph, the LR expresses how

1 source2004
forensics

Geographic Profiling

Geographic profiling is a spatial analysis method used in forensic investigation to locate offenders based on the locations of their crimes. Developed by David Canter in 1994, it combines geostatistics, probability theory, and crime pattern analysis to identify high-probability crime origin zones. The method has been w

3 sources1994
forensics

Legal Judgment Prediction

Legal judgment prediction is a machine learning approach that forecasts court decisions and judicial outcomes based on case features, legal precedent, and judicial characteristics. Pioneered by Daniel Katz and colleagues in 2017 with their celebrated U.S. Supreme Court prediction model, this method applies supervised l

3 sources2017
forensics

Network Analysis of Case Law

Network analysis of case law applies graph-theoretic and network science methods to study the structure and dynamics of legal precedent systems. Developed systematically by James Fowler and colleagues in 2011, this method treats legal citations as directed edges in a network where nodes represent court decisions and ed

3 sources2011
migration studies

Residual Method for Unauthorized Population

The residual method estimates the size of the unauthorized migrant population by subtraction: it takes the total foreign-born population counted in a census or large survey and removes the part that can be accounted for as legally resident, treating whatever remains as the unauthorized residual. Robert Warren and Jeffr

1 source1987
forensics

Risk Terrain Modeling

Risk Terrain Modeling (RTM) is a geospatial crime prediction method that identifies high-risk locations by analyzing environmental and geographic features that attract or facilitate crime. Developed by Joel Caplan, Lichen Kennedy, and James Miller in 2011, RTM bridges environmental criminology theory with geographic in

3 sources2011