Recently I overheard an older man instructing a younger man in the 3 stages of dealing with people. He described them as Telling, Yelling and Asking. He suggested that we tend to start out telling people what to do. Then, when they don't respond favorably, we yell. When we find that doesn't work, we begin asking.
People tend to respond better to asking than telling or yelling.
The advice given was to move to the asking stage quickly to save everybody a lot of frustration and grief. Not everything we learned is relevant, even if there was a time when we could get away with it. If you are not getting the response you want, start asking questions to understand how the situation looks to your crew. They are not responding because that makes sense to them . . . The more respectful you are of them, the more respectful they will be of you.