In this paper, involvement in fictional films is defined as a multidimensional construct consisting of qualitatively differing, interdependent modes of reception. Based on theoretical considerations that we developed further through successive questionnaire studies, we construct a four-factor-model with the latent factors Identity Work, In-Emotion, Imagination, and Production. We subsequently develop and validate a measurement instrument, the Modes of Reception Inventory, which assesses dominant modes of reception for fictional films. The psychometric properties and the construct validity of this scale are tested (...) using structural equation modeling. Finally, we discuss possible extensions and applications of modes of reception for audience research. (shrink)