PFSRD:Perception

This material is published under the OGL

Perception

(Wis)

Your senses allow you to notice fine details and alert you to danger. Perception covers all five senses, including sight, hearing, touch, taste, and smell.

Check: Perception has a number of uses, the most common of which is an opposed check versus an opponent's Stealth check to notice the opponent and avoid being surprised. If you are successful, you notice the opponent and can react accordingly. If you fail, your opponent can take a variety of actions, including sneaking past you and attacking you. Perception is also used to notice fine details in the environment. The DC to notice such details varies depending upon distance, the environment, and how noticeable the detail is. The following table gives a number of guidelines.

Detail	Perception DC
Hear the sound of battle	–10
Notice the stench of rotting garbage	–10
Detect the smell of smoke	0
Hear the details of a conversation	0
Notice a visible creature	0
Determine if food is spoiled	5
Hear the sound of a creature walking	10
Hear the details of a whispered conversation	15
Find the average concealed door	15
Hear the sound of a key being turned in a lock	20
Find the average secret door	20
Hear a bow being drawn	25
Sense a burrowing creature underneath you	25
Notice a pickpocket	Opposed by Sleight of Hand
Notice a creature using Stealth	Opposed by Stealth
Find a hidden trap	Varies by trap
Identify the powers of a potion through taste	15 + the potion's caster level
Perception Modifiers	DC Modifier
Distance to the source, object, or creature	+1/10 feet
Through a closed door	+5
Through a wall	+10/foot of thickness
Favorable conditions^1	–2
Unfavorable conditions^1	+2
Terrible conditions^2	+5
Creature making the check is distracted	+5
Creature making the check is asleep	+10
Creature or object is invisible	+20
1 Favorable and unfavorable conditions depend upon the sense being used to make the check. For example, bright light might decrease the DC of checks involving sight, while torchlight or moonlight might increase the DC. Background noise might increase a DC involving hearing, while competing odors might increase the DC of a check involving scent.
2 As for unfavorable conditions, but more extreme. For example, candlelight for DCs involving sight, a roaring dragon for DCs involving hearing, and an overpowering stench covering the area for DCs involving scent.

Action: Most Perception checks are reactive, made in response to observable stimulus. Intentionally searching for stimulus is a move action.

Try Again: Yes. You can try to sense something you missed the first time, so long as the stimulus is still present.

Special: Elves, half-elves, gnomes, and halflings receive a +2 racial bonus on Perception checks. Creatures with the scent special quality have a +8 bonus on Perception checks made to detect a scent. Creatures with the tremorsense special quality have a +8 bonus on Perception checks against creatures touching the ground and automatically make any such checks within their range. For more on special qualities, see Special Abilities. A spellcaster with a hawk or owl familiar gains a +3 bonus on Perception checks. If you have the Alertness feat, you get a bonus on Perception checks (see Feats).

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