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Consciousness, Introspection, and Subjective Measures

In recent years, the divide between conscious and unconscious perception has been the focus of a thriving research area in the science of consciousness. Subjective measures, frequently referred to as ‘introspective measures’, play a prominent role in this literature and have been the subject of intense criticism. This chapter discusses the main types of subjective measures used in current-day science of consciousness. I explain the key worry about such measures, namely the problem of a putatively ever-present response bias. I then turn to the question of whether subjective measures of consciousness are introspective. I show that there is no clear answer to this question, as proponents of subjective measures do not employ a worked out notion of subjective access. In turn, as I explain, this makes the problem of response bias less tractable than it might otherwise be.