Instead of 5 in Fallout 3 and Fallout: New Vegas, in Fallout 4, the player character can invest an additional 21 attribute points into the SPECIAL stats at the start of the game. However, unlike the previous games each SPECIAL stat starts out at 1 instead of 5. Later the player can upgrade their SPECIAL stats when leveling up. (Total starting attributes is 28)
Unlike in previous games, it appears that all SPECIAL stats can be meaningfully boosted past 10. In other words, temporary (e.g. chems) and static (e.g. from clothing) boosts are allowed to bring your stats higher than 10, and this is meaningful. For a more permanent adjustment, Bobbleheads can permanently raise a stat already at 10 to 11.
|Image||Primary statistic||Description||Derived statistics and effects|
|Strength||A measure of your raw physical power. It affects how much you can carry and the damage of all melee attacks.|| Carry Weight|
|Perception||Perception is a measurement of your environmental and situational awareness. It directly affects weapon accuracy in V.A.T.S. (Vault-Tec Assisted Targeting System), lock-picking skills, and successful attempts at stealing items.||Weapon Accuracy in V.A.T.S.|
|Endurance||A measure of your overall physical fitness. It affects your total Health and the Action Point drain from sprinting.|| Health per level.|
Action Point drain from Sprinting.
|Charisma||Your ability to charm and convince others. It affects your success to persuade in dialogue, prices when you barter, and the maximum number of settlers in settlements.|| Success to persuade in dialogue.|
Prices when you Barter.
Maximum settlement population.
|Intelligence||A measure of your overall mental acuity. It affects the number of Experience Points earned and reduces the number of dud words when hacking terminals.|| Experience Points earned.|
|Agility||A measure of your overall finesse and reflexes. It affects the number of Action Points in V.A.T.S. and your ability to sneak.|| Action Points|
Your ability to Sneak.
|Luck||A measure of your general good fortune and affects the recharge rate of critical hits.||Recharge rate of Critical Hits.|
- After exiting Vault 111, the Sole Survivor can find a "You're SPECIAL!" book under Shaun's crib in Sanctuary Hills, which allows raising of one of the primary statistics by one. This normally cannot be used to raise a stat already at 10 to 11. However, one can use a temporary stat loss from a consumable to decrease a current SPECIAL stat and then use the book to upgrade that stat. When the consumable's effect wears off, they will have gained an extra point in that SPECIAL stat permanently. This means that it is possible raise a stat to 12, if one already had a stat at 11 prior to using the book. Liam's glasses may also be used for Charisma only.