Question: I have the following scenario where a person I'm working with is new in the team and they're in a leadership role within the team. 

They asked why something was done a particular way. 

I gave them the reasons. They scoffed at it. 

This behaviour is becoming a pattern, and comes across as a little bit elitist instead of engaging and showing vision. I need to develop a constructive way to respond. 

My question is: **How do you respond when someone scoffs at your reasoned answer to their question?**

Answer: 
Always *politely listen,* making very sure that the person knows that you are listening attentively. Ask for clarification of the reaction if it seems appropriate. Remember(!) that the person with whom you are dealing might not realize(!!) how his/her reactions are being interpreted – by you or by others.

If you sincerely feel that this is becoming an impediment, or that the project is going in the wrong directions because your input is being (inadvertently? unintentionally?) excluded, discuss the matter with your manager – and, in their office, *listen* more than you speak.
I'd respond with a question.

> 
> I'm confused. You ask me for my input, and then you often scoff at my response. If you genuinely are not interested in what I have to offer, why do you bother asking me for it?
> 
> 
> 

If this leads to an explanation about how this person doesn't mean to scoff, then you can address why it seems like that is the case, and the air has been cleared between you, with improved communications going forward. If the person does mean to, and feels somehow justified, you have already signaled that you are not interested in responding to queries offered in this spirit, and you can explicitly tell him that you are not interested in having these kind of exchanges that offer no one any kind of value.

This really only applies if it seems like what is being scoffed at is your own input. A new set of eyes thinking the existing way is not the best is not uncommon, otherwise, and certainly is not directed at you, unless you personally had a major role in the existing processes being scoffed at.