Do you believe leadership is one of your strong points?
Leadership is something that is often defined and alluded to but is, in fact, difficult to ascertain.
To over simplify; good leaders are usually highly empathetic in the sense of understanding the views and feelings of people working for them. At the same time they are relatively low in terms of charity (true altruism) because as a leader they need to persuade people to achieve his/her objectives.
So, if you tell someone in an interview that you are a highly effective leader, always follow the statement with a clear example of how your leadership either directly changed things or how your leadership actions enabled a specific success. This should be in terms of a short “soundbite” type of story. For example: This was the situation, this is how I led people to the right decision/conclusion/action and this was the result.