The Quadrants of Aggression and Intrusion Concern (QuAIC) is used to screen incidents of threat, aggression, and other intrusive or vexatious behaviours, and determine the approximate level of concern.

QuAIC is not a formal risk assessment tool. It is a decision-making aid for victims/targets to know when to report concerns and for responders to prioritise cases and determine appropriate interventions and allocation of resources when responding to reports of problem behaviours.

QuAIC was developed by Associate Professor Troy McEwan, Dr Annabel Chan, and Mr Luke Bartlett.