The study reported here aimed to develop and psychometrically assess an instrument to measure examination anxiety among undergraduate university students. Based on empirical evidence and recent literature review we developed a 12 item scale to measure the severity of examination anxiety. The instrument was administered to students, two weeks before they wrote their examinations. Experts (n = 10) participated in a validation process of the instrument before it was administered to students (n = 40). Internal consistency reliability for the instrument was 0.82 (Cronbach's alpha) and there was 92% overall agreement between experts about the relevance of the instruments' items to measure students' examination anxiety, providing evidence for content validity. Factor analysis resulted in three cohesive and theoretically meaningful factors. There is evidence for content and convergent validity. The developed instrument is a reliable, valid and empirical measure to assess the severity of examination anxiety. The scale will take five minutes to complete.