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Subordinate Categorization Requires Conscious Awareness Ido Amihai, Leon Deouell, and Shlomo Bentin.

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Presentation on theme: "Subordinate Categorization Requires Conscious Awareness Ido Amihai, Leon Deouell, and Shlomo Bentin."— Presentation transcript:

1 Subordinate Categorization Requires Conscious Awareness Ido Amihai, Leon Deouell, and Shlomo Bentin

2 Introduction Faces can be discriminated from other objects, even when they are not consciously visible However, it is not clear which type of subordinate information is processed (identity? Race? Gender? Expression? Just categorical?) Morris, J.P., Pelphrey, K.A. & McCarthy, G. (2007). Processing without awareness in the right fusiform gyrus. Neuropsychologia

3 Methods: Gender and Race Adaptation (Webster, Kaping, Mizokami & Kuhamel, 2004) Adaptor (male/female)Target (unclear gender) Adaptation effect = (%adaptor and target were incongruent ) - (%adaptor and target were congruent)

4 Methods Female male AsianEuropean

5 CFS (invisible) No CFS (visible) 1000 / 2500 / 4000 / 5000 ms Dominant Methods

6 CFS (invisible) No CFS (visible) 1000 / 2500 / 4000 / 5000 ms Dominant Methods

7 CFS (invisible) No CFS (visible) 1000 / 2500 / 4000 / 5000 ms Dominant Methods

8 CFS (invisible) No CFS (visible) 1000 / 2500 / 4000 / 5000 ms Dominant Methods

9 CFS (invisible) No CFS (visible) 1000 / 2500 / 4000 / 5000 ms Dominant Methods

10 CFS (invisible) No CFS (visible) 1000 / 2500 / 4000 / 5000 ms Dominant Methods

11 CFS (invisible) No CFS (visible) 1000 / 2500 / 4000 / 5000 ms Dominant Methods

12 CFS (invisible) No CFS (visible) 1000 / 2500 / 4000 / 5000 ms Dominant Methods

13 CFS (invisible) No CFS (visible) 1000 / 2500 / 4000 / 5000 ms Dominant Methods

14 CFS (invisible) No CFS (visible) 1000 / 2500 / 4000 / 5000 ms Dominant Methods

15 CFS (invisible) No CFS (visible) 1000 / 2500 / 4000 / 5000 ms Dominant Methods

16 CFS (invisible) No CFS (visible) 1000 / 2500 / 4000 / 5000 ms Dominant Methods

17 CFS (invisible) No CFS (visible) 1000 / 2500 / 4000 / 5000 ms Dominant Methods

18 CFS (invisible) No CFS (visible) 1000 / 2500 / 4000 / 5000 ms Dominant Methods

19 CFS (invisible) No CFS (visible) 1000 / 2500 / 4000 / 5000 ms Dominant Methods

20 CFS (invisible) No CFS (visible) 1000 / 2500 / 4000 / 5000 ms Dominant Methods

21 CFS (invisible) No CFS (visible) 1000 / 2500 / 4000 / 5000 ms Dominant Methods

22 CFS (invisible) No CFS (visible) 1000 / 2500 / 4000 / 5000 ms Dominant Methods

23 CFS (invisible) No CFS (visible) 1000 / 2500 / 4000 / 5000 ms Dominant Methods

24 CFS (invisible) No CFS (visible) 1000 / 2500 / 4000 / 5000 ms Dominant Methods

25 CFS (invisible) No CFS (visible) 1000 / 2500 / 4000 / 5000 ms Dominant Methods

26 CFS (invisible) No CFS (visible) 1000 / 2500 / 4000 / 5000 ms Dominant Methods

27 CFS (invisible) No CFS (visible) 1000 / 2500 / 4000 / 5000 ms Dominant Methods

28 CFS (invisible) No CFS (visible) 1000 / 2500 / 4000 / 5000 ms Dominant Methods

29 CFS (invisible) No CFS (visible) 1000 / 2500 / 4000 / 5000 ms Dominant Methods

30 CFS (invisible) No CFS (visible) 1000 / 2500 / 4000 / 5000 ms Dominant Methods

31 CFS (invisible) No CFS (visible) 1000 / 2500 / 4000 / 5000 ms Dominant Methods

32 CFS (invisible) No CFS (visible) 1000 / 2500 / 4000 / 5000 ms Dominant Methods

33 CFS (invisible) No CFS (visible) 1000 / 2500 / 4000 / 5000 ms Dominant Methods

34 CFS (invisible) No CFS (visible) 1000 / 2500 / 4000 / 5000 ms Dominant Methods

35 CFS (invisible) No CFS (visible) 1000 / 2500 / 4000 / 5000 ms Dominant Methods

36 CFS (invisible) No CFS (visible) 1000 / 2500 / 4000 / 5000 ms Dominant Methods

37 CFS (invisible) No CFS (visible) 1000 / 2500 / 4000 / 5000 ms Dominant Methods

38 CFS (invisible) No CFS (visible) 1000 / 2500 / 4000 / 5000 ms Dominant Methods

39 CFS (invisible) No CFS (visible) 1000 / 2500 / 4000 / 5000 ms Dominant Methods

40 CFS (invisible) No CFS (visible) 1000 / 2500 / 4000 / 5000 ms Dominant Methods

41 CFS (invisible) No CFS (visible) 1000 / 2500 / 4000 / 5000 ms Dominant Methods

42 Gender Race Non Dominant Methods 1000 / 2500 / 4000 / 5000 ms

43 300ms (ISI) Dominant 300ms (ISI) Methods

44 300ms (ISI) Dominant 300ms (ISI) Methods

45 Predictions The occurrence of a bias when the adaptor is invisible would indicate that information about gender and race can be extracted from invisible faces. If the bias would occur only when the adaptors are visible, it would mean that such information is dependent on conscious awareness.

46 Results

47 * * * * * *

48 The Correlation between effect size and visibility p = 0.12 p < 0.025

49 Summary The goal of the present study was to determine whether information about race and gender can be processed without awareness. We examined whether the presentation of adaptor faces can bias the classification of an ambiguous face’s gender or race when the adaptor is not consciously visible.

50 Conclusions An adaptation effect occurred that correlates and increases with subjective visibility. Information about a faces gender and race depends on the amount of time that a face is subjectively visible for.


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