Comparison in face processing: Can exposure facilitate improved recognition of unfamiliar faces?

brasscoffeeAI and Robotics

Nov 17, 2013 (3 years and 6 months ago)

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RESULTS (Summary)



Brief exposure produced poorest recognition (Experiment 1 & 2).



Similar comparators, during exposure facilitated better recognition
compared to other conditions (Experiment 1).



In a design, which included internal feature only exposure, there was
no advantage for the comparator conditions, although all comparator
conditions were better than brief exposure (Experiment 2).


DISCUSSION



These results suggest that comparison can aid recognition, but only
when whole faces are exposed.



Previous research has suggested that internal features become
more influential for recognition as a face acquires familiarity
(Clutterbuck and Johnston, 2005; Young et al, 1985).



Internal only exposure automatically focuses attention on these
features.



Preliminary results from other perceptual learning experiments
suggest comparison can focus attention to critical areas of the
stimulus. Other face experiments confirm comparison advantage only
present when no other impetus to attend to internal features.


Therefore, comparison is only advantageous when it generates
attention towards the diagnostic features of a given stimulus.



Clutterbuck, R., & Johnston, R. A. (2005). Demonstrating how unfamiliar faces

become familiar using a face matching task.
Eur J Cogn Psychol, 17
(1), 97
-
116.


Dwyer, D. M., & Vladeanu, M. (2009). Perceptual learning in face processing:

Comparison facilitates face recognition.
QJ Exp Psychol, 62
(10), 2055
-
2067.


Hancock, P. J. B., Bruce, V., & Burton, A. M. (2000).

Recognition of unfamiliar faces.
Trends Cogn Sci, 4
(9), 330
-
337.


Minear, M., & Park, D. C. (2004). A lifespan database of adult facial

stimuli.
Behavior Res Meth, Ins C, 36,
630

633.


Young, A. W., Hay, D. C., McWeeny, K. H., Flude, B. M., & Ellis, A. W. (1985).

Matching familiar and unfamiliar faces on internal and external features.

Perception, 14
(6), 737
-
746.



REFERENCES

Scott. P. Jones, Dominic. M. Dwyer, and Michael. B. Lewis
-

Cardiff University.

*

Comparison might assist in focusing attention

on diagnostic internal features, but does not

otherwise aid recognition.

Comparison only improves recognition

when external face features are present.

RESULTS















































Mean recognition accuracy (with SEM) as percentage correct.

Exp 2: Exposure to internal feature faces.

Recognition of faces from photographs is

poor, but producing comparison faces

during training may help.

Comparison in face processing:


Can exposure facilitate improved recognition of unfamiliar faces?

Exp 1: Exposure to whole faces.

ACKNOWLEDGEMENTS & CONTACTS

Funded by: EPSRC & School of Psychology Cardiff University.

Contact: jonessp4@Cardiff.ac.uk

INTRODUCTION



Recognition of an unfamiliar face is difficult and often fraught with error
(Hancock, Bruce, and Burton, 2000).



It has been shown, using computer generated images, that exposing an
unfamiliar face, in an intermixed schedule, with similar comparators, aids
subsequent recognition of the target (Dwyer and Vladeanu, 2009).



EXPERIMENTAL DETAILS AND STIMULI


1s ISI

2s


2s


1s ISI

2s


2s


1s ISI

1s ISI

Experiment 1:


Gave exposure to whole faces in 3 conditions.
After each condition a test array, consisting of
internal features only, was presented.

Experiment 2:



Gave internal feature exposure. After each
condition two arrays, one morph and one non
-
morph array, were presented consecutively.


Conditions:

Conditions:


Similar comparators (Left)
were the same gender and
had similar hairstyles.



Dissimilar comparators were
different in gender to the
target.


Similar comparators (Left)
were the same gender and
morphed away from the
target by 50%.




Dissimilar comparators
different in gender to the
target