This observational methodology study will produce a Turkish version of the Nottwil Environmental Factors Inventory (NEFI-TR) within one month using a standardized translation and cultural adaptation process. Content validity will be assessed using an expert panel (and, if applicable, cognitive debriefing with adults with spinal cord injury) to ensure relevance, clarity, and comprehensibility of each item in the Turkish context.

Translation/adaptation: (1) two independent forward translations into Turkish; (2) reconciliation and harmonization by a multidisciplinary committee; (3) back-translation by independent translators; (4) expert committee review for semantic, idiomatic, experiential, and conceptual equivalence; (5) pre-test/cognitive debriefing (if planned) and final revisions; (6) proofreading and finalization of NEFI-TR and documentation of all decisions.

Inclusion Criteria:

• Adults (>=16 years) with a diagnosis/history of spinal cord injury (traumatic or non-traumatic)
• Living in Turkey
• Able to read/understand Turkish and provide informed consent
• Clinically stable to complete questionnaires

Exclusion Criteria:

• Fully recovered from SCI / no longer living with SCI-related functional consequences (as defined by your protocol)
• Severe cognitive/communication limitations preventing valid completion
• Any condition judged by investigators to preclude participation

Adults (≥16 years) living in Turkey with a history of spinal cord injury (traumatic or non-traumatic) who can read and understand Turkish and provide informed consent. Participants will be recruited from rehabilitation/SCI outpatient settings and/or patient networks to complete the Turkish NEFI (NEFI-TR) pretest as part of the translation and content validity process. Individuals coded as fully recovered from SCI (i.e., no ongoing SCI-related limitations) will be excluded.

Individual participant data will not be shared because this study is limited to questionnaire translation and content validity assessment and will use minimal, non-interventional data. Only aggregate, de-identified results (e.g., item-level content validity indices and summary statistics) will be reported.