Face Perception 1 Find out whether your ideal partner is an extrovert or an introvert. It has 20 questions and should take about 10-12 minutes. You will see male or female faces depending on which gender you are most attracted to for your partners. Do not be concerned if you keep seeing the same pair of faces. You are still progressing through the test. Many of the image pairs will look the same because they have been created from the same average face. In fact, there are subtle differences between them. It was developed by Professor David Perrett and Dr Tony Little of the University of St Andrews.
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