There is a debate among behavioural scientists about the origins of jealousy:  Is it inherited or do we develop it?  Psychologists E. Aronson and A. Pines believe it is the latter.  They developed an extensive 200-item sexual-jealousy questionnaire that was administered to several hundred subjects.  Aronson and Pines found that jealous persons reported more overall dissatisfaction with their lives than others did.  In addition, they tended to have a lower level of education, greater feelings of inferiority, and an unflattering self-image.

(Source:  The Big Book of Personality Tests by Salvatore V. Didato, Ph.D., page 40)