Attribtues

Strength

Increases damage and max inventory weight.

Agility

Increases change to hit and walking speed.

Dexterity

Increases change of evasion and missile accuracy.

Vitality / Endurance

Increases health and stamina regeneration rate.

Energy / Intelligence

Increases mana and mana regeneration rate.

Wisdom

Increases how much you can remember (spells).

Spirit / Willpower

Increases magic defence.

Personality / Charisma

Related to bartering, getting information, getting into fights, diplomacy skills.