this is interesting. I've to say that not only Ni types can lie frequently, another types can. Also from my experience, Ne types do it too. I've experiences about Ne types lying or twisting truth or hiding it, etc. Ne types can also go sneaky.

I think that S focus on tangible things that comes from the senses, so I think it can make N types to go straight about information exchange. Usually, S types focus on aspects such as who, what, when, where and why, which helps N to come to earth and stay on facts and reality. Long positive interactions would help in this. In the same way, I think N helps S but in different ways.