Abilities

Strength (Str)
Measures your character's physical strength. Strength apply to melee attacks, damage rolls and physical actions, such as swimming or breaking doors.

Dexterity (Dex)
Measures hand-eye coordination, agility, reflexes and balance. Dexterity apply for ranged attacks, reflex defense and dexterity-based skills.

Constitution (Con)
 Represents health and Stamina. Constitution apply to hit points, fortitude defense (resistance to poison, radiation, etc...) and Endurance skill.

Intelligence (Int)
 Determines how well you learn and reason. Beasts have Intelligence scores of 1 or 2, while sentient creatures at least 3. When Intelligence score increases or dicreases, number of trained skills and known languages also changes*. Intelligence apply to number of known languages, number of trained skills and Intelligence-based skills.

Wisdom (Wis)
 Describes character's willpower, common sense, perception and intuition. While Intelligence represents one's ability to analyse the information, Wisdom determines how aware and lucid the character is. Wisdom apply to will defense, Wisdom-based skills and number of Force powers you get with Force Training Feat. When the Wisdom permanently increases or decreases, the number of known Force powers also changes*.

Charisma (Cha)
 Measures the character's force of personality, personal magnetism, ability to lead and/or physical attractiveness. It is the force of presence and how others percieve you in a social setting. Charisma apply to Charisma-based skills.

* If you lose some, you chose which ones.