Lab 2 - Psychology of Perception Psychology 4165, Spring...

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Psychology of Perception Psychology 4165, Spring 2008 Laboratory 2 Face Recognition: Are Eyes Important?
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- 2 - Face Recognition Laboratory 1: Noisy Representations This laboratory is meant to explore the effect the eyes have in facial recognition. It has been shown that facial recognition is heavily dependant on the eyes, and a repeat of these results is being attempted here. Towards this end the recognition of faces that had been shown with the eyes and faces that had been shown without the eyes was compared to recognition of completely new faces. Results will be collected according to a six-step confidence scale, ranging from “confident in a new face” to “confident in an old face.” Thus the independent variable will be the identity of each picture seeking recognition, whether old with eyes, old without eyes, or new, and the dependant variable will be the recognition confidence of each participant. The results were examined utilizing both the Signal Detection Theory and the High Threshold Model. The Signal Detection Theory states that the probability of a new face and the probability of an old face follow Gaussian distributions, with the various decision criteria determining the confidence of discernment. The High Threshold Model states that each decision criteria is defined by a static recognition “value,” below which no faces are recognized at that level of confidence. The hypotheses to be tested are (1) that Signal Detection Theory is a better predictor of facial recognition than the High Threshold Model, and (2) that seeing the eyes improves facial recognition.
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- 3 - Face Recognition Method Participants The participants of this experiment were the thirty-one members of the PSYC 4165 Spring 2008 lab section 2. They are of mixed gender, and generally around the age of twenty. Materials
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This note was uploaded on 04/03/2008 for the course PSYC 4165 taught by Professor Harvey,lew during the Spring '08 term at Colorado.

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Lab 2 - Psychology of Perception Psychology 4165, Spring...

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