1.1 Defining the problem
Focus question: Is there an increase in the perception and rating of disgust in females rather than males?
Hypothesis: If disease related pictures are shown to a female participant they will rate it higher, in terms of disgust than the male participants.
Disgust is a powerful human emotion that is signalled by the presence of certain olfactory or visual stimuli. Odour molecules possess a large variety of features and due to this they excite specific receptors more or less strongly. These signals are then combined by the different receptors in order to create what individuals perceive as smell. Olfactory receptor neurons in the nose are different to other neurons due to their short lifespan however regenerate on a regular basis. (Moran, 2007) Vision however is the ability of the eye to focus and detect light using the photoreceptors located on the retina of each eye. The photoreceptors sense and