A specific phobia is a fear of a particular object or situation. For many children, phobias result in considerable academic difficulties, social and personal distress, and interference in day-to-day activities. Physical symptoms typically accompany the intense anxiety caused by a specific phobia and may include blushing, profuse sweating, trembling, nausea, and difficulty talking. Phobias can persist a lifetime and may lead to other adult anxiety, mood, and substance use disorders. One-session exposure treatment (OST), a form of cognitive behavior therapy, has been considered a rapid and effective treatment for adults with a variety of specific phobias. Upward of 75 to 80% of adults treated with OST were considered diagnoses free following treatment. OST has proven useful in treating some children with specific phobias but not all. It is possible that parental factors may affect whether a child continues to experience a phobia and how well a child responds to treatment. For example, parents who are overly protective or have a phobia themselves may prevent their child from overcoming a specific phobia. Family-enhanced OST (augmented OST) involves the parents of affected children and provides the parents with strategies to assist their children in overcoming phobias. This study will compare the effectiveness of OST and augmented OST in treating children with specific phobias. This study will also evaluate how parental factors influence the expression and maintenance of phobias in children.