Common Sensory Problems
The next couple of links are very useful to learn more about the hidden challenges that one may not be able to just learn through observing. These can help you open up your minds about how the difficulty may manifest as behaviors. The writings may not be relatable especially if you do not go through them yourselves, do read on the right side comments from people who have experienced them.
The differences in sensory perception between different people.
Sensory VS Language
Associative Memory and Feeling Differently
Changing Perspective Paradigm