Individuals perceive certain fonts used on political campaign signs as having partisan leanings. The more people view a font as aligned with their ideology, the more they favor it.
Source: Neuroscience News
Emotions such as heightened arousal can make pupils dilate. Belladonna (or deadly nightshade) was once used by women to dilate their pupils, thus making them seemingly more attractive.
Source: Wade, N. J. & Swanston, M. T. (2013), Visual Perception. An Introduction. 3rd edition, London, Taylor and Francis Group.
