Validating a standardised test battery for synesthesia: Does the Synesthesia Battery reliably detect synesthesia?

Consciousness and Cognition
Duncan A CarmichaelJulia Simner

Abstract

Synesthesia is a neurological condition that gives rise to unusual secondary sensations (e.g., reading letters might trigger the experience of colour). Testing the consistency of these sensations over long time intervals is the behavioural gold standard assessment for detecting synesthesia (e.g., Simner, Mulvenna et al., 2006). In 2007 however, Eagleman and colleagues presented an online 'Synesthesia Battery' of tests aimed at identifying synesthesia by assessing consistency but within a single test session. This battery has been widely used but has never been previously validated against conventional long-term retesting, and with a randomly recruited sample from the general population. We recruited 2847 participants to complete The Synesthesia Battery and found the prevalence of grapheme-colour synesthesia in the general population to be 1.2%. This prevalence was in line with previous conventional prevalence estimates based on conventional long-term testing (e.g., Simner, Mulvenna et al., 2006). This reproduction of similar prevalence rates suggests that the Synesthesia Battery is indeed a valid methodology for assessing synesthesia.

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Citations

Mar 4, 2015·Cognitive Neuroscience·Julia Simner, Duncan A Carmichael
May 25, 2016·The Journal of Nervous and Mental Disease·Brady Berman, Mark Serper
Aug 18, 2018·The Quarterly Journal of Experimental Psychology : QJEP·Rebekah C WhiteKate Nation
Oct 4, 2018·British Journal of Psychology·Duncan A CarmichaelJulia Simner
Oct 22, 2019·Philosophical Transactions of the Royal Society of London. Series B, Biological Sciences·Jennifer L Mankin
Oct 22, 2019·Philosophical Transactions of the Royal Society of London. Series B, Biological Sciences·Mary Jane SpillerClare Jonas
Oct 22, 2019·Philosophical Transactions of the Royal Society of London. Series B, Biological Sciences·Amanda K TilotSimon E Fisher
Oct 22, 2019·Philosophical Transactions of the Royal Society of London. Series B, Biological Sciences·Rebecca SmeesJulia Simner
Oct 4, 2019·Child Development·Louisa J RinaldiJulia Simner
Mar 30, 2017·Frontiers in Psychology·Mi-Jeong KangChai-Youn Kim
Dec 29, 2019·Scientific Reports·Julia SimnerNoam Sagiv
Jun 15, 2018·I-Perception·Franziska WeissGregor Volberg
Feb 7, 2021·Consciousness and Cognition·C J DanceJ Simner

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