The psychology behind sign communication

Evening everyone! I hope you're all enjoying your week so far, whatever you're getting up to. As for me, I have the fun demand of attending 4 training courses this week. I have attended 2/4 so far, which were fire marshal training & introduction to sign language. The remaining 2 I have to attend are moving people training & crisis drills training. The purpose behind these training sessions is to make me feel more responsible while working at my job. To be more precise here, I actually have 3 jobs at the moment, and 1 of them consists of being a play worker at a disability play scheme. (Hence these said training courses) But looking at the introduction to sign language training course in particular, I have learned today (when I had attended the training course) that there is a ton of psychology involved with understanding sign communication. When I was reflecting on my training later I had finished, I thought I could disclose what I had learned in my introduction to si...