Abstract
Given the problems associated with a range of subjective measures of consciousness, objective measures are considered here. Again, they are argued to be dubious measures of consciousness. Of most interest however are methodological proposals of how to identify an unproblematic measure of consciousness. These include searching for qualitative differences in task performance, and the related strategy of process dissociation, which relies on associating consciousness with control. While these methods were proposed as ways to get around the debates surrounding subjective and objective measures of consciousness, it is argued that they fail to do so. The suggestion of matching objective and subjective measures of consciousness to phenomenal and access consciousness are also rejected. This points to a significant methodological problem in identifying measures of consciousness, developed further in the next chapter.
This chapter contains parts of ‘Signal detection theory, the exclusion failure paradigm and weak consciousness—Evidence for the access/phenomenal distinction?’ from Consciousness and Cognition, Vol. 18, E. Irvine, pp. 551–560, Copyright 2009. Reprinted with permission from Elsevier.
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References
Azzopardi, P., & Cowey, A. (1997). Is blindsight like normal, near-threshold vision? Proceedings of the National Academy of Sciences USA, 94, 14190–14194.
Azzopardi, P., & Cowey, A. (1998). Blindsight and visual awareness. Consciousness and Cognition, 7, 292–311.
Bengson, J. J., & Hutchison, K. A. (2007). Variability in response criteria affects estimates of conscious identification and unconscious semantic priming. Consciousness and Cognition, 16, 785–796.
Blackwell, H. R. (1952). Studies of psychophysical methods for measuring visual thresholds. Journal of the Optical Society of America, 42, 606–616.
Block, N. (1990). Consciousness and accessibility. Behavioral and Brain Sciences, 13, 596–598.
Block, N. (2005). Two neural correlates of consciousness. Trends in Cognitive Science, 9, 46–52.
Block, N. (2007). Consciousness, accessibility, and the mesh between psychology and neuroscience. Behavioral and Brain Sciences, 30, 481–548.
Dehaene, S., Changeux, J. P., Naccache, L., Sackur, J., & Sergent, C. (2006). Conscious, preconscious, and subliminal processing: A testable taxonomy. Trends in Cognitive Sciences, 100, 204–211.
Eriksen, C. W. (1960). Discrimination and learning without awareness: A methodological survey and evaluation. Psychological Review, 67, 279–300.
Fisk, G. D., & Haase, S. J. (2006). Exclusion failure does not demonstrate unconscious perception II: Evidence from a forced-choice exclusion task. Vision Research, 46, 4244–4251.
Galvin, S. J., Podd, J. V., Drga, V., & Whitmore, J. (2003). Type 2 tasks in the theory of signal detectability: Discrimination between correct and incorrect decisions. Psychonomic Bulletin and Review, 10, 843–876.
Goldiamond, I. (1958). Indicators of perception: 1. Subliminal perception, subception, unconscious perception: An analysis in terms of psychophysical indicator methodology. Psychological Bulletin, 55, 373–411.
Green, D. M., & Swets, J. A. (1966). Signal detection theory and psychophysics. New York: Wiley.
Holender, D. (1986). Semantic activation without conscious identification in dichotic listening, parafoveal vision, and visual masking: A survey and appraisal. Behavioral and Brain Sciences, 9, 1–23.
Irvine, E. (2009). Signal detection theory, the exclusion failure paradigm and weak consciousness—Evidence for the access/phenomenal distinction? Consciousness and Cognition, 18, 551–560.
Jacoby, L. L. (1991). A process dissociation framework: Separating automatic from intentional uses of memory. Journal of Memory and Language, 30, 513–541.
Kouider, S., & Dehaene, S. (2007). Levels of processing during non-conscious perception: A critical review of visual masking. Philosophical transactions of the Royal Society B, 362, 857–875.
Kunimoto, C., Miller, J., & Pashler, H. (2001). Confidence and accuracy of near-threshold discrimination responses. Consciousness and Cognition, 10, 294–340.
Lau, H. C. (2008). A higher order Bayesian decision theory of consciousness. In R. Banerjee & B. K Chakrabati (Eds.), Progress in Brain Research, 168, 35–48.
Merikle, P. M., & Daneman, M. (1998). Psychological investigations of unconscious perception. Journal of Consciousness Studies, 5, 5–18.
Merikle, P. M., Smilek, D., & Eastwood, J. D. (2001). Perception without awareness: Perspectives from cognitive psychology. Cognition, 79, 115–134.
Reingold, E. M. (2004). Unconscious perception and the classic dissociation paradigm: A new angle? Perception & Psychophysics, 66, 882–887.
Reingold, E. M., & Merikle, P. M. (1988). Using direct and indirect measure to study perception without awareness. Perception and Psychophysics, 44, 563–575.
Reingold, E. M., & Merikle, P. M. (1990). On the inter-relatedness of theory and measurement in the study of unconscious processes. Mind and Language, 5, 9–28.
Snodgrass, J. M. (2002). Disambiguating conscious and unconscious influences: Do exclusion paradigms demonstrate unconscious perception? The American Journal of Psychology, 115, 545–579.
Snodgrass, J. M. (2004). The dissociation paradigm and its discontents: How can unconscious perception or memory be inferred? Consciousness and Cognition, 13, 107–116.
Snodgrass, J. M., & Shevrin, H. (2006). Unconscious inhibition and facilitation at the objective detection threshold: Replicable and qualitatively different unconscious perceptual effects. Cognition, 101, 43–79.
Snodgrass, J. M., Bernat, E., & Shevrin, H. (2004). Unconscious perception: A model-based approach to method and evidence. Perception and Psychophysics, 66, 846–867.
Swets, J. A. (1996). Signal detection theory and ROC analysis in psychology and diagnostics: Collected papers. Mahwah: Erlbaum Associates.
Visser, T. A. W., & Merikle, P. M. (1999). Conscious and unconscious processes: The effects of motivation. Consciousness and Cognition, 8, 94–113.
Weiskrantz, L. (1986). Blindsight: A case study and implications. Oxford: Oxford University Press.
Weiskrantz, L. (1998). Consciousness and commentaries. International Journal of Psychology, 33, 227–233.
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Irvine, E. (2013). Measures of Consciousness and the Method of Qualitative Differences. In: Consciousness as a Scientific Concept. Studies in Brain and Mind, vol 5. Springer, Dordrecht. https://doi.org/10.1007/978-94-007-5173-6_3
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