Answer: all of the above
Step-by-step explanation:
Misperception is a mistaken believe, interpretation and idea about something. The misperception can lead to misundertanding about the behavior and actions of other people this gives a sense of confusion and stress.
According to the situation, Walter may become vulnerable to symptoms of anxiety, neurosis, schizophrenia, delusion thinking and incapable to adapt the environment due to development of misconception he will not be able judge the real intentions of people.
Thus all options are applicable for the given situation.