You get sunglasses with mental power :D

+1 to every spells :o

STR 3 - as puny as a 5 year old, can't even lift 15 pounds, can't carry a total over a total of 20 pounds in equipment.
DEX 3 - clumsy, wobbly, and trips often, incapable of staying still for long or maintaining skilled mobility long. finds it almost impossible to walk or hold an object for extended periods. basically a person with cerebral palsy.
CON 3 - extremely prone to illness, extremely fragile, extremely short lifespan... disease, poison, and moderate injury always fatal.
INT 3 - below the intelligence of a cat or dog, incredibly primal and basic though processes, like an insect.
WIS 3 - forgetful, delusional, in their own reality, and even manic, not a sane individual at all ever.
CHR 3 - revolting to everyone and everything, finds it hard to behave socially and remain civil with anyone and anything, like a human sociopath constantly naked bathed in feces spouting curses at all they encounter.

STR 8 - only slightly physically capable. can lift a 40 pound weight, with effort. can carry a total of 60 pounds in equipment. capable of learning basic physical combat techniques with weapons and unarmed combat.
DEX 6 - an ordinary clutz. walks and can hold objects, but tends to trip when moving a lot and tends to drop stuff easily.
CON 6 - health that leaves an individual vulnerable, but not incapable to survive. hindered by disease, poison, and injury, but rarely ever outright killed by it.
INT 8 - incapable of speaking more than 1 language, incapable of properly speaking their own language, incapable of reading and writing. can make and use tools, shelter, clothes, etc. basically the example of a peasant in medieval Europe.
WIS 6 - extremely forgetful and slightly de-attached from reality, sane but slightly delusional, like a person with Alzheimer's.
CHR 6 - unattractive and unappealing physically and emotionally. an ugly person with extreme case of bi-polar disorder and minor socio-mania.

anything 16
STR - incredibly physically capable, brimming with muscle. the ideal warrior.
DEX - nimble and ambidextrous, mobile and capable, perfect for an acrobat.
CON - sturdy, unaffected by light illnesses and injury, shrugs them off effortlessly.
INT - intelligent enough to know how to speak, read, and write as many as 4 languages. capable intellectual who can research and study what others cannot and develop and use the most complex of devices. ideal for magi and gadgeteers.
WIS - rarely ever forgets, rarely ever makes mistakes, and retains most knowledge acquired. ideal for a savant, psion, or cleric.
CHR - attractive, appealing, and rarely ever messes up maintaining their appearance. can manipulate others with ease.

anything 18-20
almost supernatural with said capabilities, a rarity among folks showing aptitude, most but not all needs magical/scientific augmentation to achieve such a state

anything 21+
almost godlike, unnaturally capable with a state that would seem more probable in divine entities like demons or angels...

That's a good summary :P

Thanks, I play D&D way too much so I know how stats work and how they effect someone physically and mentally in the game.