Trust is essential to social interaction among humans. However, have you ever wondered why we trust other people at all?
In treating patients with phobias, therapists address the emotion of fear and try to alter that emotion so the patient is no longer afraid. However, patients with what doctors call blood-injection-injury phobia experience more difficulty with treatment. It includes people who fear needles, blood, and surgery.
Learn about phobias to snakes and spiders, on this Moment of Science.