The purpose of this article is to deal with the following question: Can the concepts of reliability and objectivity be reconceptualized and reappropriated to enable understanding of scientific excellence in participatory and action research? The article shows that it is fruitful to consider the "subjective" and active role of researchers as vital in enabling scientific objectivity and reliability. As an expansion from a replication logic, reliability can be conceptualized as adaptive, goal-seeking, dynamically regulated processes enabled by effective organization of interactive and participatory learning processes where all participants can contribute to learning and correction in inquiry. Instead of erasing subjectivity, objectivity can be enabled by critical subjectivity, intersubjectivity, practical wisdom, impartial norms of inquiry, and open democratic dialogue. Reliability and objectivity in this understanding can be enabled by participatory and action research through skilful performance of research practices such as reflective conversations between parties, dialogue conferences, experimentation, and experiential learning as part of action-research cycles, etc., which are common in participatory and action research initiatives and projects. By rethinking validity, reliability, and objectivity, recognizing the substantially more active and participatory stances enables scientific excellence, it can expand the repertoire of strategies for promoting research quality, and it helps to mainstream this type of approach in the scientific community.