Police Sergeant Exam key terms
Police Sergeant Exam · Get comfortable with the vocabulary.
- Span of control
- Related: Unity of command, Incident Command System
The number of subordinates one supervisor can effectively direct. Narrow spans suit complex or hazardous work; wide spans suit routine, well-trained units. Supervisors adjust it as incident complexity grows.
- Unity of command
- Related: Span of control, Chain of command
The principle that each employee reports to only one supervisor at a time. It prevents conflicting orders and confusion during fast-moving events, and is a core reason for formal span-of-control limits.
- Chain of command
- Related: Unity of command, Incident Command System
The formal line of authority running from the chief down through each rank. Members normally communicate through it, and supervisors must not bypass it except in emergencies or when a policy exception applies.
- Progressive discipline
- Related: Just cause, Weingarten rights
A graduated response to misconduct that starts with counseling or oral reprimand and escalates to written reprimand, suspension, demotion, or termination. It assumes discipline is corrective, not merely punitive, and requires documented prior notice.
- Just cause
- Related: Progressive discipline, Garrity protection
The standard requiring an employer to show a fair, reasonable, and well-documented basis for discipline. It examines notice, consistency, investigation quality, and proportionality, and is often defined by contract or civil service rules.
- Garrity protection
- Related: Just cause, Internal affairs investigation
A rule limiting use of compelled statements in later criminal proceedings against the officer who made them. Supervisors may order answers for administrative purposes, but must warn that the statements cannot be used criminally.
- Weingarten rights
- Related: Progressive discipline, Internal affairs investigation
A union-represented employee's right to have a representative present during an investigatory interview that the employee reasonably believes may lead to discipline. The employee must request representation; the employer may then choose to stop the interview.
- Internal affairs investigation
- Related: Garrity protection, Weingarten rights
A formal administrative inquiry into alleged misconduct by department members. It gathers facts, determines whether policy was violated, and recommends findings, using standards different from a criminal case.
- Situational leadership
- Related: Transformational leadership, Span of control
A model in which a supervisor matches directive and supportive behavior to a subordinate's competence and commitment on a specific task. It moves from directing to coaching to supporting to delegating as readiness grows.
- Transformational leadership
- Related: Situational leadership, Servant leadership
Leading by inspiring shared purpose, modeling values, and developing people beyond immediate tasks. It contrasts with transactional leadership, which relies on rewards, sanctions, and formal authority to gain compliance.
- Servant leadership
- Related: Transformational leadership, Procedural justice
A philosophy in which the leader prioritizes the growth, safety, and needs of subordinates and the community. It emphasizes listening, stewardship, and removing obstacles rather than asserting rank.
- Probable cause
- Related: Reasonable suspicion, Arrest warrant
Facts and circumstances that would lead a reasonable officer to believe a crime has been, is being, or will be committed, or that evidence will be found in a place. It is more than suspicion but less than certainty.
- Reasonable suspicion
- Related: Terry stop, Probable cause
Specific, articulable facts suggesting criminal activity, justifying a brief investigative detention. It is a lower standard than probable cause and must rest on observed behavior, not a hunch.
- Terry stop
- Related: Reasonable suspicion, Exclusionary rule
A brief detention based on reasonable suspicion during which an officer may investigate and, if warranted by safety concerns, pat down outer clothing for weapons. It is limited in scope and duration.
- Exclusionary rule
- Related: Search warrant, Miranda warning
The principle that evidence obtained through an unconstitutional search or seizure is generally inadmissible in court. Exceptions include good faith, inevitable discovery, and attenuation.
- Search warrant
- Related: Probable cause, Exclusionary rule
A court order authorizing a search of a specific place for specific items, based on probable cause. It must be executed within the time allowed and limited to the place and items described.
- Miranda warning
- Related: Custodial interrogation, Exclusionary rule
The advisement of rights required before custodial interrogation: silence, counsel, and appointed counsel. Custody plus interrogation triggers it; spontaneous statements or routine booking questions generally do not.
- Custodial interrogation
- Related: Miranda warning
Questioning by police after a person has been taken into custody or otherwise deprived of freedom in a significant way. It triggers the Miranda requirement and demands careful documentation of time, place, and words used.
- Arrest warrant
- Related: Probable cause, Exigent circumstances
A judicial order authorizing seizure of a person based on probable cause. Officers must confirm its validity and scope, and generally may not enter a third party's home to execute it without consent or exigency.
- Exigent circumstances
- Related: Arrest warrant, Search warrant
Urgent conditions, such as imminent danger to life, hot pursuit, or likely destruction of evidence, that justify warrantless action. The government bears the burden of showing the urgency was real.
- Hot pursuit
- Related: Exigent circumstances
A warrantless entry justified by an officer closely chasing a suspect who flees from a lawful arrest. The pursuit must be continuous and the underlying offense must support arrest.
- Brady material
- Related: Chain of custody, Discovery
Evidence favorable to the accused that is material to guilt or punishment and must be disclosed by the prosecution. Officers must preserve and forward such information, including credibility issues, to prosecutors.
- Chain of custody
- Related: Brady material, Evidence log
The documented, unbroken record of who handled evidence, when, and for what purpose. Gaps or unclear entries can undermine admissibility and are a common target of defense challenges.
- Evidence log
- Related: Chain of custody
A record listing each item seized or received, with description, location found, collector, date, and storage location. It supports the chain of custody and is reviewed before testimony.
- Discovery
- Related: Brady material, Report writing
The pretrial process in which parties exchange information about witnesses, evidence, and defenses. Officers support it by producing complete reports and disclosing favorable information to the prosecutor.
- Report writing
- Related: Discovery, Use-of-force report
Documenting events in clear, factual, chronological language that supports later review, prosecution, and training. Good reports separate observation from inference and include who, what, when, where, why, and how.
- Use-of-force report
- Related: Force continuum, Report writing
A written account of force used, including the officer's perception of threat, the options considered, and the outcome. It must be factual, timely, and consistent with policy and any recorded evidence.
- Force continuum
- Related: Use-of-force report, De-escalation
A framework describing levels of resistance and corresponding force options, from presence and verbal direction to physical control and deadly force. It guides proportionality and is often paired with a reasonableness standard.
- De-escalation
- Related: Force continuum, Crisis intervention team
Techniques such as time, distance, cover, communication, and slowing the pace that reduce the need for force. Policy often requires using them when feasible before escalating.
- Crisis intervention team
- Related: De-escalation
A trained group of officers who respond to people in behavioral health crisis, using specialized communication and community referral. Supervisors should request CIT or co-response when available.
- Problem-oriented policing
- Related: SARA model, Community policing
An approach that identifies underlying conditions behind repeat incidents and designs tailored responses, commonly via the SARA model of scanning, analysis, response, and assessment. It measures outcomes, not just activity.
- SARA model
- Related: Problem-oriented policing
A four-step problem-solving process: scanning to identify problems, analysis of causes, response through tailored strategies, and assessment of results. It structures problem-oriented projects and their documentation.
- Community policing
- Related: Problem-oriented policing, Procedural justice
A philosophy of partnership between police and residents to identify and solve local problems, supported by communication, transparency, and decentralized decision making. It is a strategy, not a single program.
- Procedural justice
- Related: Community policing, Servant leadership
The idea that people accept decisions more readily when the process is fair: voice, neutrality, respectful treatment, and trustworthy motives. Supervisors model it internally as well as in public contacts.
- Incident Command System
- Related: Unified command, Span of control
A standardized, scalable structure for managing emergencies, with common terminology, clear objectives, and defined roles such as command, operations, planning, logistics, and finance. It integrates multiple agencies under one plan.
- Unified command
- Related: Incident Command System
An incident structure in which agencies with jurisdiction or responsibility share command decisions through one coordinated set of objectives. It avoids competing commands at multi-agency scenes.
- After-action review
- Related: Incident Command System
A structured debrief after an incident or exercise that examines what was planned, what happened, why, and what should change. Findings feed training, policy revision, and future planning.
- Mutual aid agreement
- Related: Unified command
A written arrangement under which agencies provide personnel, equipment, or services to one another during emergencies. It defines authority, cost, liability, and how responding resources integrate into command.
- Early intervention system
- Related: Internal affairs investigation, Progressive discipline
A data-based tool that flags officers showing patterns such as repeated force, complaints, or sick leave, prompting supervisory review and support. It is non-disciplinary and aims to correct problems early.