A study on the category of criminal signs

The concept of a criminal sign means a sign of suspicion with a concrete basis related to the particular individual. An attempt is made to collect possible crime signs through the police officer´s perception and to categorize them. The procedures of this study include: collecting possible criminal signs through police officers´ reports and the design of a questionnaire: collecting data on the perception of criminal signs; selecting the important criminal signs of which the averages are above a certain score; and grouping the important criminal signs which have been selected into several categories by factor analysis