Using magic to reconcile inattentional blindness and ... - Oak

Using magic to reconcile inattentional blindness and attentional misdirection Anthony S. Barnhart & Stephen D. Goldinger

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Arizona State University

Results: IB Rates

Results: Post-Critical Period IB Predictors

 In its pure form (C1), the illusion produced rates of IB similar to those of Kuhn et al. (2008) and Simons & Chabris (1999).  Reduction of IB rate in C2 runs counter to prediction from magic theory. 1

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Kuhn & colleagues (2005; 2008; 2010) developed a unique magic trick for use in IB experimentation wherein a cigarette and lighter disappear.  Although the method used to vanish the cigarette happened in full view, few participants detected it.

We adapted an illusion from Regal (1999). A coin placed beneath a napkin disappears, reappearing beneath a second napkin. The method behind the illusion happens in full view, but is often missed due to social cues and attentional workload. Method: Three between-subject experimental conditions:

 The method replicated and extended findings from the IB (and change blindness) literature.

1) Experimental Trial & Free-Viewing Trial (n = 24)  Analogous to structure of Kuhn & Tatler (2005).

 Fixation location during critical period was not predictive of IB, suggesting differences in covert attentional deployment.

2) Three Control Trials (no movement), Experimental Trial, & Free-Viewing Trial (n = 17)  Analogous to structure of Mack & Rock (1998).

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χ2 (3) = 30.45, p