Afew concerned citizens made an appointment to meet with the chief of police in anytown, usa. they are concerned with the productivity of the police department in their city. they are also concerned with the lack of coordination between the residents of the city and the police department. mrs. stern expresses that she is that the crime rate in her area has decreased as a result of proactive efforts of the police department. at the same time, mrs. joseph complains that the crime that disappeared in mrs. stern’s neighborhood has now moved to her neighborhood. this effect is known as: