Isolating perceptual conflict: a theoretical and methodological analysis of the Task-Irrelevant Paradigm

The conflict interference effect, exemplified by the Stroop effect, serves as a key indicator for studying conflict processing and cognitive control and is typically categorized into two conflict components within conflict classification theories. Perceptual conflict is constrained by task settings in typical paradigms, making precise detection challenging. This article reviews the literature on perceptual conflict, proposes the Task-Irrelevant Paradigm (TIP) as an experimental strategy to independently investigate perceptual conflict, and provides a more systematic analysis of its theoretical, empirical, and cognitive-processing foundations. The TIP offers an effective method for more deeply exploring perceptual conflict, and a clearer framework for understanding how such conflict may persist under task-irrelevant conditions, demonstrating broad applicability across conflict interference paradigms and potential for studying implicit associations. Current empirical research involving the TIP is still relatively limited, and future studies should focus on refining task designs, clarifying boundary conditions, and advancing multimodal integration research.