Causes of Phobias

Evolutionary

• Born with fear of spiders
  
• Instinct lost over time, not innate but easily aquired
• Ohman (1975) paired different Cs with shock, eg. faces, house, snakes, spiders, only snakes and spiders conditioned

Biological

• Genetic variants affect intensity of conditioned fear
• MZ > DZ twins

Cognitive

• Faulty thoughts 
• >…