DESI-18 Buddy Programme: Instrument, Scoring & Cognitive Interview Protocol (v6.1.1 / v9.5.2 / v1.3)

Version 6.1.1 (May 2026) — Corpus Release 2026.1 alignment Item set unchanged (16 scored items + 1 attention check; identical to v6.0).Metadata and theoretical framing updated to align with Buddy Prospectus v9.5and Cognitive Interview Protocol v1.3. Substantive changes vs v6.0:- License: CC BY 4.0 → CC BY-NC-SA 4.0- RAP anchor: Sprecher & Hendrick (2004) → Tickle-Degnen & Rosenthal (1990) + NPSS family- WNS anchor: Tajfel & Turner (1979) → Rossignac-Milon et al. (2020) + McNamara/Stevenson (2021); Tajfel demoted to ancestry-only- RSP anchor expanded: + Reis (2018), Reis et al. (2018) PPR- COSMIN reference updated: Mokkink (2010) → Mokkink et al. (2018/2019) + Terwee et al. (2018)- Validation scope: 600-dyad multinational 3-arm → 90-dyad analytic floor, single host country, 3 sites- Language: bilingual NL/EN → English-medium at Stage 1 (translations reserved for Stage 2 PReDA)- VIVES status: confirmed → conditional (Belgium host AND VIVES among 3 sites)- Added Stage 1 vs Stage 2 PReDA distinction- Added cognitive interview phase reference (n=12; 10 mentees + 2 dyadic pairs)- Acknowledgement: SIT framing removed, Social Cure framework retained .