Linguistic Validation of Patient-Reported Outcome and Screening Instruments in Pashto and Dari

Linguistic validation is the documented process of translating a questionnaire and testing it with patients to confirm the translation means what the original means. It combines forward and back translation, expert review and cognitive debriefing interviews.

Ten steps following the ISPOR principles of good practice, adjusted for Afghan varieties, literacy and privacy. Two clinically trained native linguists translate independently, a third reconciles the drafts, an independent linguist back-translates, and a native-speaking clinician and the Cultural Compliance Bureau review. Cognitive debriefing with typically five to eight Afghan respondents per variety, matched by gender and dialect, follows.

No. Pashto is a separate language with its own letters, grammar and regional varieties. A Pashto speaker may not understand a Dari or Farsi questionnaire, so each language needs its own validated version.

Only after review. Many Persian versions were developed and tested in Iran. We compare your version with Afghan Dari usage, debrief it with Afghan respondents and tell you whether to keep, revise or replace it.

Pashto and Dari versions of common screeners circulate, with different histories. We check who each version was tested with, validate the one you plan to use, or build one under the developer’s terms.

Linguistic validation shows that items mean the same thing to respondents. Psychometric validation tests how scores behave: reliability, factor structure and cut-off points. A study of a Pashto screener in eastern Afghanistan found different best cut-offs, so we recommend both when scores drive care decisions.

Established instruments, under each developer's license and translation requirements, and new items where a concept has no good measure. Common requests include depression and anxiety measures such as the PHQ-9 and PHQ-2, the GAD-7, the Edinburgh Postnatal Depression Scale, the Hopkins Symptom Checklist, the Kessler K10 and K6, and the DASS-21.

Cognitive debriefing is a structured interview in which respondents explain each item in their own words. We typically interview five to eight respondents per variety, and more when age, literacy or region vary widely.

Most of the time goes to developer review and respondent recruitment. A short screener in one variety commonly takes six to ten weeks. Batteries and trial packages are scheduled after scoping.

Yes. Women interview women, men interview men, and interviewers speak the respondent’s variety. Research in Afghanistan found that screening cut-offs and validity can differ between women and men, so matching is part of the method.

Yes. We validate trauma measures such as the PCL-5 and the International Trauma Questionnaire, and moral injury scales, which some people search for as moral trauma, for Afghans affected by the Afghan war, including those who served alongside U.S. and allied forces, their families and evacuees.

We validate the mode your patients will use: self-completed, read aloud by staff or recorded audio. Audio is recorded by voices matched to the variety, and respondents who do not read take part in debriefing.

Validated Pashto and Dari versions in print-ready and screen-ready right-to-left layouts with read-aloud audio; a linguistic validation report recording every item's translation history and who made each decision; a de-identified cognitive debriefing summary; a signed certificate of linguistic validation for your IRB, sponsor or regulatory file; and an approved Pashto and Dari glossary for future instruments.

Where the instrument will be used, through Afghan diaspora communities in the United States, Canada and Europe. We do not conduct fieldwork inside Afghanistan.

Yes. We deliver the Pashto and Dari versions with our own people and align with the team handling your other languages through shared concept definitions and harmonization notes, so every version measures the same thing.