- "Corin is able to make anyone feel content in his or her circumstances. There is a druglike side effect to her skill, however. A person can become addicted to the feeling she produces, and be unable to feel well without it."
- ―Entry on Corin's gift[src]
Anyone who gets exposed to this power will feel content, and even happy, regardless of his or her situation, be it boredom or an endless time in captivity. However, those who are exposed to this gift for too long will become addicted to it; they may begin to feel uneasy without being exposed to it for a certain period of time.
Corin mainly used this ability to keep the Volturi wives, Sulpicia and Athenodora, happy while being trapped in their castle tower. Aro also made her use this gift on Chelsea to prevent her from leaving the Volturi; since her influence was addictive. Aro himself had been careful not to be exposed to it too often. Marcus had repeatedly refused to let Corin relieve his pain of Didyme's death over the centuries, though Caius frequently used it to mitigate his boredom between battles and punishing expeditions.
- Didyme's ability to induce happiness worked wonders to those around her since her power made someone truly happy. Also, her power did not have an addictive effect like Corin's.