Commentary On Tsikandilakis Et Al. (2025)—Subtleties of Awareness Help Explain Discrepancies Between Conscious and Unconscious Perception Interpretations: Implications for Researchers and Their Participants

Abstract

As Tsikandilakis et al. (2025) illustrate, an intense back and forth scientific debate on the existence and scope of unconscious processing has existed for at least 2000 years and within the field of psychology for well over 100 years. The focus of my commentary highlights important contributions from signal detection theory, which my work was based upon, beginning over 30 years ago (Haase, 1994). Much more research has been done in the last 30 years as interest in the topic has grown and achieved a higher degree of respect within psychology and related disciplines. The controversy is obviously not resolved, but ideas are offered for making progress, some of which are emphasized in Tsikandilakis et al. (2025). Other approaches may have merit as well, based on experimental and observational data that acknowledge and emphasize the importance of subjective principles such as weak or fragmentary conscious experiences of masked prime stimuli that continue to “haunt” interpretations of unconscious perception.