On the subject of passengers.....i sometimes think of "worse case scenarios", and what i'd do....... but i like to think that if there were any serious doubts on passenger's mental states...then hopefully i would sus' this out before taking them flying.
I brief my passengers ( i think quite well).... and emphasize the fact that they will probably feel turbulance etc, more in a relatively small aeroplane, compared to the airliner......the passengers then seem to revel in the fact that they have not been at all affected by the turbulance etc...and feel very happy with themselves.
I have never taken a child flying......my sister has two kids around 5 years old.......but to take kids up this young would worry me a little... ( screaming kids in the back.....not good ).