Your strength represents your physical power, and affects your carry and armor weight, melee damage and how muscular your character looks.
Your constitution represents how hardy you are, and affects your health pool, stamina pool, carry and armor weight along with resistance to ailments.
Your dexterity represents how agile you are, and affects your movement speed, stamina pool and chance to hit weak spots or gaps in an opponents defence with melee weapons and bows.
Your intelligence represents your mental prowess, and affects your mana pool, as well as spell damage.
Your Psyche represents your mental fortitude, and affects your mana pool as well as resistance to hostile magic.
Your height affects how tall your character is, your health pool, melee damage bonus, carry and armor weight.
Your body weight affects your attributes depending on which weight class you are in. While in the “Fit” weight class your stats are unchanged, however gaining or losing a significant amount of weight will alter your base attributes in realistic ways.