Setting this option to On means Siri is ready to accept commands when you raise your phone to your ear. You can always invoke Siri by pressing and holding your iPhone's Home button. Tap the Home button to exit Settings.
Effective listening is a way of showing concern for subordinates, and that fosters cohesive bonds, commitment, and trust. Effective listening tends to reduce the frequency of interpersonal conflict and increases the likelihood that when conflicts emerge they will be resolved with a win-win solution.
Consequently, very few people think they need to develop their listening skills. But, in fact, listening effectively is something that very few of us do. It's not because listening effectively is so difficult. Most of us have just never developed the habits that would make us effective listeners.