Perception

Perception is one of the 7 Primary Statistics in the SPECIAL system. It represents the ability to see, hear, taste, and notice unusual things.

Fallout, Fallout 2, Fallout Tactics
Modifies: Sequence, ranged combat distance modifiers and the First Aid, Doctor, Lockpick, Traps and Pilot skills. A player character with higher Perception may notice things that allow them to open up new dialogue options on occasion.

A high Perception is important for a sharpshooter.

Perception 7 or above is required for the Chosen One to notice the plug in slot for the Pipboy on the Vault City computer; plugging it in and choosing the risky sounding Reformat option adds the Vault City Travel Log to the Pipboy. Noticing this slot makes it possible to obtain the Vault City Designer Notes after finishing the game; obtaining the Travel Log is not required for this purpose.

Perception is required for many perks, notably PE 6 for Sniper.

Fallout 3

 * Modifies Explosives, Lockpick and Energy Weapons skills

Perception also determines when red compass markings appear (which indicate threats).

Percepcja Восприятие