Research methodology
The research, verification, source-selection and comparison methodology used across the NRE Reference Series.
Executive introduction
The NRE Reference Series is designed as a comparative institutional resource rather than an opinion-based commentary.
Its methodology is intended to distinguish clearly between what a source actually says, how NRE interprets that wording and what terminology NRE itself proposes.
Primary sources are preferred wherever available. Definitions are preserved in their original wording where practical, translations are identified separately, and missing information is not inferred merely because a particular interpretation appears likely.
The methodology also recognises that terminology can change over time. Source dates, access dates and subsequent corrections therefore form part of the wider Reference Series process.
Research objective
The objective is to document terminology accurately enough that readers can compare definitions without relying on assumptions about what an organisation intended to mean.
The Reference Series examines how terms relating to functional nudity, nudism and naturism are defined or described across different institutions and publications.
Depending on the subject of a particular Reference, relevant sources may include national and international federations, dictionaries, encyclopedias, academic literature, governments, legislation, regulatory guidance and other authoritative publications.
Document first, interpret second
The primary task is to establish what a source actually publishes. Comparative interpretation follows only after the underlying wording has been identified and verified.
Methodological principles
The following principles guide the research process.
Primary sources first
Official organisational, governmental, legal or publisher sources are preferred over summaries, commentary and third-party descriptions.
Source wording is preserved
Definitions should be reproduced or paraphrased faithfully without silently changing their meaning to fit the NRE terminology framework.
Absence is not invention
If a source does not clearly define a term, the methodology records that absence rather than constructing a definition on the source's behalf.
Analysis is separated from evidence
Source wording, factual description and NRE interpretation should be identifiable as different layers of information.
Translation is transparent
Where a source is not in English, the original language should be retained where practical and translated wording identified as a translation.
Corrections remain possible
Organisations and publishers may clarify wording, provide more authoritative sources or identify subsequent changes.
Source hierarchy
Sources are not treated as equally authoritative.
Authoritative source material
Official federation websites, constitutions, statutes, government documents, legislation, court decisions, official dictionaries, publisher pages and original institutional publications.
Scholarly and analytical material
Peer-reviewed research, academic books, recognised scholarly reference works and publications analysing the history or use of relevant terminology.
Contextual evidence
Reputable media reports, historical records, archived material, interviews and other sources that may provide context but should not ordinarily override an available primary source.
Search-engine summaries are not definitions
Search snippets, automated summaries and secondary quotations may help locate relevant material, but they should not be treated as authoritative source wording where the underlying source can be examined directly.
Research process
Each comparative review follows a structured sequence.
Identify the source
Establish the organisation, publication or authority whose terminology is being reviewed.
Locate official material
Search for definitions, glossaries, constitutions, FAQs, policy documents or other official explanatory material.
Verify the wording
Confirm that the wording appears in the source itself and record the relevant publication or webpage.
Record the source context
Note the language, publication date where available, access date and whether the wording is a formal definition or explanatory text.
Analyse the terminology
Identify scope, boundaries, internal consistency and differences from other definitions under review.
Apply comparative methodology
Where relevant, apply the published NRE assessment criteria consistently across sources.
Check for conflicting material
Review whether another official source from the same organisation materially changes, expands or contradicts the definition.
Publish with traceability
Present conclusions in a form that allows readers to identify the underlying evidence and understand how the analysis was reached.
Verification procedure
Before source material is relied upon for a comparative conclusion, the following checks should be completed wherever applicable.
Verification checklist
Language and translation
International terminology research inevitably involves translation. Translation itself can introduce changes in meaning, particularly where different languages do not map perfectly onto the English terms nudism and naturism.
Original-language wording takes priority
Where practical, the original wording should be retained alongside an English translation. The translation is intended to communicate the meaning of the source rather than silently replace it.
Where an organisation provides its own English-language version, that official translation should ordinarily be preferred to an independently produced translation, while material differences between versions may still be noted.
Automated translation may assist discovery and preliminary review but should not be treated as definitive where wording materially affects the analysis.
Missing or ambiguous evidence
The absence of an easily identifiable public definition requires careful wording.
Absence of evidence is reported narrowly
If no sufficiently clear public definition is identified, the Reference Series should state that no qualifying public definition was located within the material reviewed. It should not state that the organisation has no definition at all unless that stronger conclusion can be established.
An organisation may maintain terminology in internal documents, membership material, archived publications or documents that were not accessible during the review.
Similarly, vague explanatory wording should not be converted into a precise definition unless the source itself supports that interpretation.
Source wording and NRE analysis
A core safeguard of the Reference Series is the separation between what a source publishes and what NRE concludes from that material.
| Layer | Purpose | Requirement |
|---|---|---|
| Source wording | Documents what the organisation or publication actually says. | Must remain faithful to the source. |
| Factual description | Explains the context, source type, publication status and other verifiable information. | Should remain evidence-based. |
| Comparative analysis | Identifies differences, ambiguities, strengths or omissions. | Must be clearly distinguishable from source wording. |
| NRE proposal | Presents terminology or methodology developed by NRE. | Must be identified explicitly as an NRE proposal. |
A source should never be made to appear to endorse NRE terminology merely because its wording is being compared with the NRE framework.
Comparative scoring
Where terminology is scored or ranked, the assessment must use a methodology defined before the individual result is assigned.
Methodology before outcome
Criteria should not be altered retrospectively because an organisation receives a surprisingly high or low result. Any subsequent methodology revision should be documented and, where necessary, applied consistently to all previously assessed sources.
Scores should reflect the published evidence available at the time of review rather than organisational reputation, size, federation status or agreement with NRE.
Where insufficient evidence exists to score a criterion confidently, that limitation should be recorded rather than compensated for through assumption.
Corrections and updates
Terminology research should remain open to correction.
Organisations may publish new definitions, revise existing wording, identify overlooked documents or clarify how historical material should be interpreted.
Corrections should improve the record
Where reliable new evidence materially changes an assessment, the relevant Reference should be updated rather than preserving an outdated conclusion merely for consistency with an earlier publication.
Significant revisions should retain sufficient version information to explain what changed and why.
Limitations
No international terminology review can guarantee access to every historical, internal or non-digitised source.
Websites change, publications disappear, translations can be imperfect and organisations may use terminology differently across different documents or periods.
Conclusions apply to the evidence reviewed
Findings should therefore be understood as assessments of the identified source material within the documented review period, not as claims that no other relevant evidence exists anywhere.
These limitations reinforce the need for traceable sources, transparent methodology and a mechanism for subsequent correction.
Key points
Methodology status
Reference 07 establishes the research methodology used throughout the NRE Nudism & Naturism Definitions Study 2026.
Its purpose is to separate source evidence from NRE interpretation, preserve differences between source groups and provide a consistent process for identifying, recording, comparing and updating terminology.
The methodology does not require external sources to agree with NRE definitions. Federation, dictionary, academic, governmental, legal and media terminology is examined on its own terms before cross-source comparison is undertaken.
Source before interpretation
Conclusions about a source should follow examination of the source material rather than assumptions about what an organisation, institution or author probably means.
Original meaning preserved
External definitions are recorded and analysed on their own terms. They are not rewritten to make them conform to the NRE terminology framework.
Absence is not inferred broadly
Where no qualifying public definition is identified, the finding is limited to the material reviewed rather than asserting that no definition exists anywhere.
Source purpose matters
Federation, dictionary, academic, governmental, legal and media sources serve different institutional purposes and are interpreted accordingly.
Translation is identified
Original-language wording is preferred where available. NRE translations are distinguished from official translations and should not be presented as wording issued by the source.
Living evidence record
Findings may be corrected or updated where newer, stronger or more authoritative evidence becomes available.
Evidence handling
Evidence should remain traceable
Source-specific conclusions should be capable of being traced back to identifiable material. The evidence layer therefore records sufficient information to distinguish source wording from NRE analysis and to allow later verification or correction.
- Source organisation, author or issuing institution identified.
- Relevant page, publication, document or entry identified.
- Original wording preserved where quotation is necessary.
- Paraphrase distinguished from direct quotation.
- Official translations distinguished from NRE translations.
- Publication or access information retained where relevant.
- Conflicting official material recorded rather than silently reconciled.
- Material changes can trigger reassessment of earlier findings.
Related NRE References
Reference 07 provides the methodology connecting the NRE framework, terminology assessment and the external source reviews.
Nudism & Naturism Definitions Study 2026
Reference 07 establishes the research protocol used to identify, preserve, compare and interpret terminology throughout the NRE Nudism & Naturism Definitions Study 2026.
Document information
Methodology safeguard: Source-specific findings are limited to the material reviewed and should not be extended beyond what that evidence supports. Absence of a qualifying public definition does not establish that no definition exists elsewhere. External terminology is preserved on its own terms, and corrections or stronger evidence may be incorporated as the study is updated.