STR
Increases amount of physical damage.
DEX
Increases attack speed, physical skill speed, accuracy, evasion, critical hit probability, success rate of dagger skills (such as Deadly Blow), shield defense success rate, and movement speed.
CON
Increases maximum HP and CP, HP recovery speed, weight limit, underwater breath gauge, shock resistance, and bleeding resistance.
INT
Increases damage of magic attacks and success rate of curse spells.
WIT
Increases chance of magic critical hits, casting speed, resistance to Hold, resistance to curses (such as HP degeneration, decreased HP recovery rate, increased skill re-use time, and decreased effect of heals).
MEN
Increases magic defense, maximum MP, MP recovery speed, poison resistance, and curse resistance. Decreases probability of magic interruption.