Susceptibility:

Susceptibility to products of combustion, which includes metabolism, lung capacity, pulmonary disease, allergies, or other physical limitations that affect survivability in a fire environment In application, as with the use of computer evacuation models, assumptions can address a larger number of factors that are components of the basic performance characteristics, including the following:

(1) Alertness - condition of being awake/asleep, can depend on time of day

(2) Responsiveness - ability to sense cues and react

(3) Commitment - degree to which occupant is committed to an activity underway before the alarm

(4) Focal point - point at which an occupant's attention is focused (e.g., to front of classroom, stage, or server in business environment)

(5) Physical and mental capabilities-influence on ability to sense, respond, and react to cues; might be related to age or disability

(6) Role-influence on whether occupant will lead or follow others

(7) Familiarity - influence of time spent in building or participation in emergency training

(8) Social affiliation - extent to which an occupant will act/ react as an individual or as a member of a group

(9) Condition over the course of the fire - effects, both physiological and psychological, of the fire and its combustion products on each occupant.