Besides its workplace uses, like Charisma in Living Quarters, Strength in Power Generators, Agility in Diners.

Do we know if Endurance increases HP in the Dwellers, or that strength helps in melee damage / survivability in the wastelands? And Perception?


3 Answers 3


Do note that nothing has been made official, and this is a compilation of observations/hypotheses.


  • Vault:
    • Decreased timer while working in power plants
  • Wastes:
    • Needed to pry open lockers and boxes.
    • May also affect damage done by guns.
    • May increase a Dwellers capacity.


  • Vault:
    • Hit chance in combat
    • Decreases water production timer of the Water Treatment and Water Purification rooms
  • Wastes:
    • Find stuff like abandoned buildings
    • Critical attack cross hairs expand and contract slower, making it easier to deal maximum damage (×5) with a critical attack.


  • General:
    • Health points gained on level up (does not increase hp retroactively, max out endurance to 10+7 outfit and then start leveling to get maximum health)
    • Resist radiation and damage (11 Endurance = immune to radiation)
  • Vault:
    • Food and water production timers of the Nuka-Cola bottler room.


  • Vault:
    • Improved fertility. (Reduced time to get pregnant.)
    • Decreases production timer in Radio room.
  • Wastes:
    • Also chance of befriending people in the wastes (Gives the xp but no damage taken)
    • Interaction with groups of slaves


  • Vault:
    • Med-bay (Stims and Radaway) production timers
  • Wastes
    • Heal/help people


  • Vault/Wastelands:
    • also increases Exp gain (for level and Special stat increasing), extinguishing fire


  • Vault:
    • Food production timer of the Diner and Garden rooms.
    • Increases attack speed.
  • Wastes:
    • Run away from unwinnable fights taking less damage


  • Vault:
    • Decreases chance of rush failure.
    • Increases amount of caps earned when resources collected from a production room (also increases chance to earn those caps)
    • Increases critical bar fill up rate.
  • Wastes
    • Amount of loot found outside vault

Further reading and sources:


  • I set my shelter that way, to have the medbay spread in the vault to handle fire faster.
  • the difference in having 1 or 2 intelligence is that a dweller with 2 intelligence levels up in half the time
  • queuing my new matured dwellers to go to school so they get intelligence 2 or 3 then endurance for max HP and after that their main stat - super efficient

UPDATE: If you want to nerd out on more specifics, I recommend Section 7 of this Fallout Shelter Efficiency Data.

Also, here someone suggests that skills above 10 continue to benefit the dweller/explorer:

  • 2
    Luck reduces the chance of a rush failure Commented Jul 9, 2015 at 12:26
  • 2
    Are you sure about endurance health and perception hit chance?
    – SkyHiRider
    Commented Aug 19, 2015 at 11:41
  • 5
    @Timelord64 In this case, the edit doesn't deviate from the intent of the post in any way, and is minor enough to be acceptable. The idea that one should copy this entire post but add one little point in your own answer is ridiculous, and is likely to get your new answer automatically flagged as a duplicate answer and deleted.
    – Unionhawk
    Commented Aug 27, 2015 at 14:41
  • 2
    Well it seems endurance effects the amount of hp you gain on lvl up. Dwellers start at 105 hp and gain (2.5 + 0.5 * endurance) hp per level. Wearing +7 endurance outfit increases the bonus, for a total of 11 hp per level and 644 hp at lvl 50 if dweller had 17 endurance on every lvl up.
    – SkyHiRider
    Commented Sep 23, 2015 at 12:45
  • 3
    I have read (and experience seems to confirm) that Luck affects caps in the wasteland; Perception affects loot in the wasteland. So you are far better off sending people out in a Sturdy Vault Suit (+5 Per) than a Formal Attire (+Luck). Commented Apr 21, 2016 at 14:00

Effects during quests only:

  • Strength: Increased attack damage
  • Perception: Reduced critical hit speed
  • Endurance: Reduced radiation damage
  • Charisma: Better dialogue choices
  • Intelligence: Increased "this is the right/wrong way" frequency
  • Agility: Reduced time between attack rounds
  • Luck: Increased chance of critical hit

These are the other uses for S.P.E.C.I.A.L. stats:

  • Strength: Damage increased everywhere.
  • Perception: Damage increased in-Vault; better Loot in the Wasteland, and better Critical lock-on on Quests.
  • Endurance: Increased health.
  • Charisma: Helps charming Wasteland Creatures. (And eventually better results in dialouges on Quests.)
  • Intelligence: Increased medical capacities in the Wasteland.
  • Agility: Better Damage in-Vault, better Hit Speed on Quests, and less Damage from losing a combat in the Wasteland.
  • Luck: Also gives better Loot on Quests and in the Wasteland.

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