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Confusing contours & pieces of glass

Confusing contours & pieces of glass. Rob van Lier, Tessa C.J. de Wit, Arno Koning. Presented by Nick van der Poel. Contents. Introduction Experiment 1 Results 1 Experiment 2 Results 2 Conclusion & Discussion. Introduction. Albert Michotte (1964) Kanisza square. Experiment 1.

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Confusing contours & pieces of glass

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  1. Confusing contours & pieces of glass Rob van Lier, Tessa C.J. de Wit, Arno Koning Presented by Nick van der Poel

  2. Contents • Introduction • Experiment 1 • Results 1 • Experiment 2 • Results 2 • Conclusion & Discussion

  3. Introduction • Albert Michotte (1964) • Kanisza square

  4. Experiment 1 • 12 participants (students)

  5. Experiment 1 • 12 participants (students) • ‘Are the grey bars straight or indented?’ • 256 trials per participant

  6. Results 1

  7. Experiment 2 • 17 participants (students) • Same stimuli and procedure as in Exp 1 • ‘What is the (possible) direction of shift?’

  8. Results 2

  9. Conclusion & Discussion • Proportion incorrect judgements higher for the illusory surfaces • Control group had many incorrect judgements • Ramachandran’s checkboard illusion • Attention and fixation

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