Strength[edit]
Strength Governs the Skills of Blade, Blunt, and Hand to Hand. Additionally it determines your total encumbrance (5x Strength) and how much damage your blows do.
Intelligence[edit]
Intelligence determines your total Magicka (2x your intelligence) and your total magicka use. Intelligence governs the skills of Alchemy, Conjuration, and Mysticism.
Willpower[edit]
Willpower determines how fast your Magicka regenerates. Willpower governs the skills of Alteration, Destruction, and Restoration.
Speed[edit]
Speed determines how fast your character moves. It governs the skills of Acrobatics, Light Armor, and Athletics.
Agility[edit]
Agility governs the skills of Security, Sneak, and Marksman. Characters with a low agility have a greater chance of getting knocked down.
Endurance[edit]
Endurance determines your total fatigue and health (1/4 Endurance added to health every time you level up). Endurance governs the skills of Heavy Armor, Armorer, and Block.
Personality[edit]
Personality determines an NPC's disposition towards you and governs the skills of Mercantile, Speechcraft, and Illusion.
Luck[edit]
Luck governs no skills, but has an effect on everything that you do.