Which factor is NOT affected by the patrol techniques tested in the Kansas City Preventive Patrol Experiment?

The factor that is not affected by the patrol techniques tested in the Kansas City Preventive Patrol Experiment is corruption in law enforcement. The Kansas City Preventive Patrol Experiment primarily focused on evaluating the impact of different levels of police patrol on crime rates, citizen perceptions of safety, and related outcomes. Corruption, however, is a complex issue involving ethical misconduct, abuse of authority, and the integrity of law enforcement agencies, which is not directly influenced by variations in patrol presence.

During the experiment, the researchers found that changes in patrol techniques—specifically, the levels of preventive patrol in certain areas—did indeed affect reported crime rates, with some areas seeing no significant differences compared to others. Additionally, citizen attitudes towards police were also measured, offering insights into how visible police presence impacted community perceptions. Motor vehicle collisions were also analyzed to determine any correlational effects with patrol variations. However, none of these factors—crime rates, citizen attitudes, or motor vehicle collisions—directly address or measure corruption within police departments, making it the correct choice in this context.