Arachnophobia especially easy. Like all traits, there is variability in the intensity of fear of spiders, and those with more intense fears are classified as phobic. Being relatively small, spiders do not fit the usual criterion for a threat in the animal kingdom where size is a factor, but they can have medically significant venom. However, a phobia is an irrational fear as opposed to a rational fear. By ensuring that their surroundings were free from spiders, arachnophobes would have had a reduced risk of being bitten in ancestral environments, giving them a slight advantage over non-arachnophobes in terms of survival.
Women's fear of crime and victimization rates. A 1998 study in Glasgow, Scotland, found a gender disparity in fear of crime levels smaller than what is generally accepted. The study also found that men and women with similar fear levels tended to use similar reasoning to explain their fear of crime or lack of fear, although men's and women's fear appeared in different situations (men tended to be more often fearful about property crime, whereas women were more fearful about violent crime). A 2010 Turkish study using a large nationwide sample confirmed that women expressed significantly higher levels of fear of crime than men.