Panic - Revision history

Jan: Improve Basic article: verified sources, clearer explanation, calculations and links (GPT-6)

2026-11-02T18:22:31Z

Improve Basic article: verified sources, clearer explanation, calculations and links (GPT-6)

← Older revision		Revision as of 19:22, 2 November 2026
Line 131:		Line 131:

	* Australian Building Codes Board, National Research Council of Canada, International Code Council, & Department of Building and Housing New Zealand. (2005). ''International fire engineering guidelines'' (2005 ed.). Australian Building Codes Board.		* Australian Building Codes Board, National Research Council of Canada, International Code Council, & Department of Building and Housing New Zealand. (2005). ''International fire engineering guidelines'' (2005 ed.). Australian Building Codes Board.
	* Bryan, J. L. (2002). Behavioral response to fire and smoke. In P. J. DiNenno (Ed.), ''SFPE handbook of fire protection engineering'' (3rd ed.). National Fire Protection Association.		* Bryan, J. L. (2002). Behavioral response to fire and smoke. In P. J. DiNenno (Ed.), ''SFPE handbook of fire protection engineering'' (3rd ed., pp. 3-315–3-341). National Fire Protection Association.
	* Proulx, G. (2002). Movement of people: The evacuation timing. In P. J. DiNenno (Ed.), ''SFPE handbook of fire protection engineering'' (3rd ed.). National Fire Protection Association.		* Proulx, G. (2002). Movement of people: The evacuation timing. In P. J. DiNenno (Ed.), ''SFPE handbook of fire protection engineering'' (3rd ed., pp. 3-342–3-366). National Fire Protection Association.

	[[Category:Human Behaviour & Evacuation]]		[[Category:Human Behaviour & Evacuation]]

Jan: Improve Basic article: verified sources, clearer explanation, calculations and links (GPT-6)

2026-11-02T17:56:22Z

Improve Basic article: verified sources, clearer explanation, calculations and links (GPT-6)

Show changes

Sanne: Add diagrams fse-panic-v1.svg, fse-panic-v2.svg, fse-panic-v3.svg (level-1 visual plan)

2026-11-02T07:13:35Z

Add diagrams fse-panic-v1.svg, fse-panic-v2.svg, fse-panic-v3.svg (level-1 visual plan)

← Older revision		Revision as of 08:13, 2 November 2026
Line 8:		Line 8:

	Bryan presents panic as a flight response involving extravagant and injudicious effort. He also quotes a definition describing fear-induced, nonrational, nonadaptive and nonsocial behaviour that diminishes group escape. These descriptions focus on behaviour and its effects, not simply on a person's emotional state.<ref name="Bryan-3-330" />		Bryan presents panic as a flight response involving extravagant and injudicious effort. He also quotes a definition describing fear-induced, nonrational, nonadaptive and nonsocial behaviour that diminishes group escape. These descriptions focus on behaviour and its effects, not simply on a person's emotional state.<ref name="Bryan-3-330" />
			[[File:fse-panic-v1.svg\|thumb\|upright=1.5\|alt=Competitive harmful flight is separated from fear, information seeking and helping others.\|Fear and purposeful action are not proof of classic panic. Based on Bryan (2002), p. 3-330 and Proulx (2002), pp. 3-344–3-345.]]

	The term is often used after multiple-fatality incidents without physical or social evidence of competitive flight. Bryan notes that participant accounts did not support the classic group-panic explanation in the cases he reviews. A severe outcome does not retrospectively prove the behaviour that supposedly caused it.<ref name="Bryan-3-330" />		The term is often used after multiple-fatality incidents without physical or social evidence of competitive flight. Bryan notes that participant accounts did not support the classic group-panic explanation in the cases he reviews. A severe outcome does not retrospectively prove the behaviour that supposedly caused it.<ref name="Bryan-3-330" />
Line 36:		Line 37:

	Bryan describes recognition, validation, definition, evaluation, commitment and reassessment. These processes help explain why people wait, change their interpretation or select different actions as information develops. They offer more explanatory detail than a general panic label.<ref name="Bryan-3-318" />		Bryan describes recognition, validation, definition, evaluation, commitment and reassessment. These processes help explain why people wait, change their interpretation or select different actions as information develops. They offer more explanatory detail than a general panic label.<ref name="Bryan-3-318" />
			[[File:fse-panic-v2.svg\|thumb\|upright=1.5\|alt=An ambiguous alarm leads to information seeking and preparation before directed travel.\|Delayed departure can reflect uncertainty rather than panic. Based on Bryan (2002), pp. 3-318–3-319 and Proulx (2002), pp. 3-348–3-350.]]

	Other people can influence whether a cue is treated as an emergency. Passive companions can reinforce an interpretation that conditions are normal, while staff instructions can prompt action. The response is socially shaped rather than necessarily irrational.<ref name="Bryan-3-317">Bryan (2002), pp. 3-317–3-318.</ref><ref name="Proulx-3-350" />		Other people can influence whether a cue is treated as an emergency. Passive companions can reinforce an interpretation that conditions are normal, while staff instructions can prompt action. The response is socially shaped rather than necessarily irrational.<ref name="Bryan-3-317">Bryan (2002), pp. 3-317–3-318.</ref><ref name="Proulx-3-350" />
Line 58:		Line 60:

	High densities can produce involuntary movement and shock waves through a crowd. People at the back may not understand that forward movement has stopped or that people at the front are being compressed. This communication failure can worsen conditions without a shared decision to compete.<ref name="Proulx-3-345" />		High densities can produce involuntary movement and shock waves through a crowd. People at the back may not understand that forward movement has stopped or that people at the front are being compressed. This communication failure can worsen conditions without a shared decision to compete.<ref name="Proulx-3-345" />
			[[File:fse-panic-v3.svg\|thumb\|upright=1.5\|alt=A dense crowd at a blocked exit experiences pressure while people behind lack information.\|Crowd danger can arise from density and communication failure, not necessarily panic. Based on Proulx (2002), pp. 3-345–3-346.]]

	Proulx distinguishes competitive rushing away from something, called panic by Fruin, from rushing towards an objective, termed a craze. These specialised descriptions should not be applied indiscriminately to every rapid crowd movement. The physical situation and direction of demand matter.<ref name="Proulx-3-345" />		Proulx distinguishes competitive rushing away from something, called panic by Fruin, from rushing towards an objective, termed a craze. These specialised descriptions should not be applied indiscriminately to every rapid crowd movement. The physical situation and direction of demand matter.<ref name="Proulx-3-345" />

Jan: New FSE wiki article: Panic (written by Kimi Code CLI)

2026-11-02T02:24:26Z

New FSE wiki article: Panic (written by Kimi Code CLI)

New page

'''Panic''' in fire-behaviour literature generally refers to nonadaptive, irrational or nonsocial flight that reduces the escape possibilities of a group. It involves more than fear, anxiety or rapid movement. Definitions include competitive or injudicious action, and the concept may be applied to a group as well as to an individual.<ref name="Bryan-3-330">Bryan (2002), p. 3-330.</ref>

Research reviewed by Bryan and Proulx found this classic form of panic to be rare in fire incidents. Purposeful, altruistic and reasonable behaviour occurred more often, even when actions later proved unsuccessful. Fear or an inappropriate outcome alone therefore does not establish panic.<ref name="Proulx-3-344">Proulx (2002), pp. 3-344–3-345.</ref><ref name="Bryan-3-315">Bryan (2002), p. 3-315.</ref>

The distinction matters for fire engineering. Delays can result from ambiguous information, route unfamiliarity, social commitments or physical crowding rather than irrational flight. Treating every evacuation problem as panic hides those causes and the measures that could address them.<ref name="Bryan-3-318">Bryan (2002), pp. 3-318–3-319.</ref><ref name="Proulx-3-348">Proulx (2002), pp. 3-348–3-350.</ref>

== Definition and misuse of the term ==

Bryan presents panic as a flight response involving extravagant and injudicious effort. He also quotes a definition describing fear-induced, nonrational, nonadaptive and nonsocial behaviour that diminishes group escape. These descriptions focus on behaviour and its effects, not simply on a person's emotional state.<ref name="Bryan-3-330" />

The term is often used after multiple-fatality incidents without physical or social evidence of competitive flight. Bryan notes that participant accounts did not support the classic group-panic explanation in the cases he reviews. A severe outcome does not retrospectively prove the behaviour that supposedly caused it.<ref name="Bryan-3-330" />

Sime's interpretation, as discussed by Bryan, treats panic as a description rather than an explanation. Calling behaviour panic does not identify the information, relationships or physical conditions that produced it. A causal assessment must examine those conditions directly.<ref name="Bryan-3-330" />

The word can also be used differently by witnesses, public officials and researchers. Anxiety during danger may be described as panic even when the person acts deliberately and helps others. A shared technical definition is needed before observations can be compared.<ref name="Bryan-3-330" />

[[Human behaviour in fire]] includes many responses that fall outside the technical definition. Investigation, warning, gathering family, route selection and assistance are common parts of evacuation. These activities should not be relabelled as panic merely because they delay immediate departure.<ref name="Proulx-3-344" /><ref name="Proulx-3-348" />

== Fear, anxiety and adaptive action ==

Fear and panic are not equivalent. Bryan reports Sime's distinction between classic panic and behaviour accompanied by concern or anxiety. A frightened person can still evaluate options, follow directions and assist others.<ref name="Bryan-3-330" />

Adaptive behaviour contributes to safety, while nonadaptive behaviour produces an unwanted result. However, an action can be well intended and still fail because the threat was misunderstood or more developed than perceived. Outcome and intention must be considered separately.<ref name="Bryan-3-330" />

An unsuccessful attempt to fight a fire illustrates the difference. If the person believed the action would work, the behaviour may have appeared adaptive from their perspective. Warning others or calling the fire service might have been more effective, but that does not automatically make the attempt irrational panic.<ref name="Bryan-3-330" />

Proulx reports that normal relationships and altruism often persist during emergencies. People may help others, warn them or gather with family before moving. Such actions can consume time while remaining purposeful and socially organised.<ref name="Proulx-3-344" />

Even rapid movement does not prove panic. A person can move quickly in response to a clear threat and an appropriate instruction. The assessment must examine whether the action was competitive, injudicious and harmful to the group's escape rather than relying on speed alone.<ref name="Bryan-3-330" />

== Ambiguous information and delayed response ==

Initial fire information is often unclear. An alarm can be mistaken for a test, and smoke odour may not reveal the fire's location or severity. Occupants commonly seek further information before committing to evacuation.<ref name="Bryan-3-316">Bryan (2002), pp. 3-315–3-316.</ref><ref name="Proulx-3-348" />

[[Pre-movement time]] includes this recognition, interpretation and preparation. It can contain investigation and movement within the occupied space, so it is not necessarily inactivity. A long delay before travel is not evidence of panic.<ref name="Proulx-3-348" />

Bryan describes recognition, validation, definition, evaluation, commitment and reassessment. These processes help explain why people wait, change their interpretation or select different actions as information develops. They offer more explanatory detail than a general panic label.<ref name="Bryan-3-318" />

Other people can influence whether a cue is treated as an emergency. Passive companions can reinforce an interpretation that conditions are normal, while staff instructions can prompt action. The response is socially shaped rather than necessarily irrational.<ref name="Bryan-3-317">Bryan (2002), pp. 3-317–3-318.</ref><ref name="Proulx-3-350" />

Repeated false alarms can further reduce credibility. Proulx explains that occupants may then delay seeking information or responding to an alarm. This is an effect of previous experience and warning management, not proof that occupants are indifferent or panicked.<ref name="Proulx-3-350" />

== Affiliation and altruism ==

[[Affiliative behaviour]] leads people to seek others with whom they have emotional ties. Families may gather before departure, and groups may remain together while moving. These actions can change timing and route use without implying nonsocial flight.<ref name="Proulx-3-344" />

Reentry provides another example of behaviour that can be misunderstood. Bryan reports people returning to fight fire, retrieve property, notify others, assist responders or rescue pets. Reentry can be dangerous and obstruct flow, yet it is often deliberate and purposeful.<ref name="Bryan-3-331">Bryan (2002), pp. 3-330–3-331.</ref>

Participants in Bryan's reviewed residential studies commonly reported altruistic responses. Keating's interview study found helpful behaviour instead of classic panic among its participants. This is evidence from a particular study, not a claim that dangerous behaviour never occurs.<ref name="Bryan-3-330" />

Group assistance can slow movement to the pace of a slower member. Proulx gives the example of a family with a child or older person. A hydraulic model may interpret the resulting speed as inefficiency, while the behaviour reflects group commitment and assistance.<ref name="Proulx-3-346">Proulx (2002), pp. 3-346–3-347.</ref>

Understanding affiliation helps explain why instructions to act only as isolated individuals may fail. Warning and route arrangements need to account for people seeking and assisting one another. This is a different engineering response from trying to control an imagined irrational crowd.<ref name="Proulx-3-344" /><ref name="Proulx-3-350" />

== Crowd density and physical danger ==

Crowd incidents can involve crushing and asphyxia without classical panic. Proulx describes how density and restricted space can produce forces that individuals cannot resist. Physical danger can therefore arise even when participants are not behaving irrationally.<ref name="Proulx-3-345" />

High densities can produce involuntary movement and shock waves through a crowd. People at the back may not understand that forward movement has stopped or that people at the front are being compressed. This communication failure can worsen conditions without a shared decision to compete.<ref name="Proulx-3-345" />

Proulx distinguishes competitive rushing away from something, called panic by Fruin, from rushing towards an objective, termed a craze. These specialised descriptions should not be applied indiscriminately to every rapid crowd movement. The physical situation and direction of demand matter.<ref name="Proulx-3-345" />

Crowd density also changes ordinary walking relationships. Speed falls as space between people disappears, and flow through a restriction can produce queues. A crowd-flow analysis should represent those physical conditions rather than attributing every queue to panic.<ref name="Proulx-3-346" />

Continuous routes and management of demand can address some crowd risks. Proulx's review discusses route capacity, dispersion and avoidance of extreme density. These measures target observable physical causes rather than relying on an untested behavioural stereotype.<ref name="Proulx-3-345" />

== Protective decisions and route choice ==

The [[Protective action decision model]] focuses attention on how people interpret information and choose protective action. This approach asks what occupants know, how they evaluate options and what they decide to do. It is more informative than assuming panic before examining those decisions.<ref name="Bryan-3-318" /><ref name="Proulx-3-348" />

Route choice can reflect familiarity rather than irrationality. Proulx reports that occupants often use familiar entry routes rather than emergency exits they have never used. The resulting path may be longer or more congested, but it has an understandable behavioural basis.<ref name="Proulx-3-342">Proulx (2002), pp. 3-342–3-343.</ref>

People can also reassess an initial choice. New smoke, staff information or the actions of companions may make another route preferable. Bryan's reassessment process captures this change without treating the first or second choice as automatically irrational.<ref name="Bryan-3-319">Bryan (2002), p. 3-319.</ref>

Competition for an exit can develop when people believe that not everyone will reach safety in time. Bryan describes how reward structure and perceived exit availability can influence cooperative or competitive responses. Such competition requires analysis of conditions rather than a blanket assumption of panic.<ref name="Bryan-3-319" />

[[Evacuation]] should therefore be studied as a sequence of information, preparation and movement. Problems at one stage can resemble those at another if only total time is observed. Separating the stages helps identify whether the issue was warning, affiliation, route capacity or actual competitive flight.<ref name="Proulx-3-347">Proulx (2002), pp. 3-347–3-349.</ref>

== Evidence and interpretation limits ==

Interviews and questionnaires provide evidence about what occupants did and why. They can reveal altruism, uncertainty and purposeful reentry that are invisible in a simple outcome account. Their findings remain tied to the incidents and participants studied.<ref name="Bryan-3-330" />

Evacuation drills offer observations under particular warning and management conditions. They may omit the perceived danger of a real fire or include expectations produced by training. Results from drills and victim accounts should be compared with their contexts retained.<ref name="Proulx-3-349" />

A rare phenomenon should not be described as impossible. The reviewed research challenges the assumption that classic panic is usual, but it does not establish that every crowd or individual always behaves adaptively. The appropriate conclusion is to require evidence of the behaviour and its causes.<ref name="Proulx-3-344" /><ref name="Bryan-3-330" />

Similarly, altruism should not be romanticised as always beneficial. Warning or assisting others can improve outcomes, while reentry or unsuccessful suppression can increase exposure. Purposeful action can have harmful consequences without becoming classic panic.<ref name="Bryan-3-330" /><ref name="Bryan-3-331" />

Models should state which behaviours they represent. Hydraulic approaches can describe movement through route elements but usually omit social influence, investigation and assistance. They cannot be used alone to infer that observed delays or route choices were caused by panic.<ref name="IFEG-2-8-3">Australian Building Codes Board et al. (2005), pp. 2.8-3–2.8-4.</ref>

== Engineering implications ==

Warning systems should provide information that occupants can interpret. Directive voice messages and staff directions can reduce uncertainty in the cited studies. This addresses a common source of delay without relying on fear or coercive crowd control.<ref name="Bryan-3-316" /><ref name="Proulx-3-350" />

Route design should account for familiar paths and social groups. Clear signage, understandable layouts and staff guidance can support occupants making decisions under uncertainty. Capacity and protection must remain adequate for the routes people actually choose.<ref name="Proulx-3-342" /><ref name="IFEG-1-2-18">Australian Building Codes Board et al. (2005), p. 1.2-18.</ref>

Crowd management should address physical demand and bottlenecks. Avoiding excessive density and maintaining communication about stopped movement can reduce danger. These measures are relevant whether or not any participant meets the technical definition of panic.<ref name="Proulx-3-345" />

Emergency plans should recognise assistance and group behaviour. Procedures that assume isolated, immediate and uniform movement may miss family gathering or help for slower occupants. Those activities belong in the timeline and staffing arrangements.<ref name="Proulx-3-344" /><ref name="Proulx-3-350" />

The useful engineering question is not whether an incident can be called panic after the event. It is which information, social interactions and physical conditions shaped behaviour, and how the building and management supported safe action. That question keeps attention on evidence and preventable causes.<ref name="Bryan-3-330" /><ref name="IFEG-2-8-3" />

Incident reviews should separate observations from labels applied afterwards. Reports of blocked exits, rapid movement or injury do not by themselves identify irrational group flight. Participant accounts, physical evidence and route conditions can help establish what actually occurred.<ref name="Bryan-3-330" />

The timing of information is particularly relevant. An action that appears unreasonable after the fire's development is known may have seemed reasonable with the limited cues available at the time. Bryan's account emphasises that inappropriate actions often arise from ambiguous or inadequate information.<ref name="Bryan-3-330" />

Physical crowd measurements answer a different question from emotional labels. Density, available space, flow and pressure can show whether occupants were exposed to crushing conditions. Those measurements should be examined directly instead of inferred from the word panic.<ref name="Proulx-3-345" />

Warning design can be assessed for its effect on uncertainty. Clear information about the incident and the required response can reduce investigation and conflicting interpretations. That does not treat occupants as incapable of reasonable action, but gives them better conditions for making decisions.<ref name="Bryan-3-316" /><ref name="Proulx-3-350" />

Assistance arrangements should reflect actions people actually take. Occupants may warn others, help with movement or look for family members. Planning for those behaviours is more realistic than assuming everyone will disregard social relationships and move independently.<ref name="Proulx-3-344" /><ref name="Bryan-3-331" />

This evidence-based approach neither excuses harmful competition nor denies fear. It requires each claimed case of panic to be demonstrated against a clear definition. Other harmful or dangerous behaviour can then be described accurately and addressed through suitable route, information and management measures.<ref name="Bryan-3-330" /><ref name="Proulx-3-345" />

Careful terminology also improves comparison between studies. One report may use panic for anxiety, while another reserves it for competitive nonadaptive flight. Recording the observed actions before assigning a label prevents those different meanings from being merged into an unsupported general account of human behaviour.<ref name="Bryan-3-330" /><ref name="Proulx-3-344" />

== See also ==

* [[Affiliative behaviour]]
* [[Human behaviour in fire]]
* [[Pre-movement time]]

== Notes ==

<ref name="Proulx-3-345">Proulx (2002), pp. 3-345–3-346.</ref>
<ref name="Proulx-3-349">Proulx (2002), pp. 3-348–3-350.</ref>
<ref name="Proulx-3-350">Proulx (2002), pp. 3-350–3-351.</ref>
<references />

== References ==

* Australian Building Codes Board, National Research Council of Canada, International Code Council, & Department of Building and Housing New Zealand. (2005). ''International fire engineering guidelines'' (2005 ed.). Australian Building Codes Board.
* Bryan, J. L. (2002). Behavioral response to fire and smoke. In P. J. DiNenno (Ed.), ''SFPE handbook of fire protection engineering'' (3rd ed.). National Fire Protection Association.
* Proulx, G. (2002). Movement of people: The evacuation timing. In P. J. DiNenno (Ed.), ''SFPE handbook of fire protection engineering'' (3rd ed.). National Fire Protection Association.

[[Category:Human Behaviour & Evacuation]]