PROTOCOL: Multisource Feedback and Work Performance: A Systematic Review and Meta-analysis.

Multisource feedback (MSF) is widely used in performance management and leadership development, yet there is still no consensus on whether it predicts improvements in employee performance. This study presents a protocol for a systematic review and meta-analysis investigating whether the use of person-moderated MSF predicts changes in individual work performance. The review is guided by an integrative framework drawing on feedback intervention theory and existing MSF models. A systematic search and meta-analytic synthesis of the empirical literature will be conducted, and potential moderators of the MSF-performance relationship will be examined to identify under what conditions effects occur. By clarifying whether and when MSF contributes to performance improvement, the study aims to provide evidence-based insights for researchers and practitioners designing feedback systems in organizations. The review will be guided by the following questions: 1. Does the use of MSF predict changes in work performance? 2. Do certain moderators affect the relationship between MSF and changes in work performance? The potential moderators are: • The number of feedback sources • The characteristic of feedback (positive vs. negative vs. evenly balanced) • Employee perceptions of and reactions to feedback • Psychological individual differences • Follow-up activities • The intended purpose of MSF • The format of feedback • The delivery mode of feedback • Socio-cultural individual differences.