Cookie memory

I dislike B.F. Skinner's behaviourism but recently I tried to apply this theory to real life.

Lucas had been preparing examination since last weekend.  He could handle the packed schedule but I  felt his stress and boredom.  Therefore I baked him some cookies, tried to associate some pleasant sensations with  his exam preparation.

Lucas even helped me out to mix all ingredients when he had a break.  Soon, a sweet aroma lingered our place, which immediately brought a broad grin across his face from ear to ear.

Very sweet!!