It is said in the arabic literature that suspeciousness is a sign of cleverness (in arabic it got a rhyme: sou2 il thun...min husn il fi tun), and I have seen many normal people, most of them are clever, who are suspecious, actually some of the best psychiatrist I've seen in my life are so suspicious...actuallyI think the scientific mind may be highly suspecious...but social suspeciousness is really sometimes unhealthy and bad...before days I have read an article talking about the nonclinical suspeciousness (suspeciousness is called Paranoia in psychiatry)...and this is a summary of it:
Six questionaire assessments were completed by 1202 individuals using the internet. Paranoid thoughts occurred in approximately a third of the group.
Normal people were assessed for the not only paranoia for other things using many questinnaires, paranoia scale was used to assess paranoia, with it coping style questionnaire was used also which ask people how they would react to worries (they were given a list of paraoid worries) and 4 types of coping styles were identified, 2 adaptive styles (the rational coping and the detached coping styles) and 2 maladaptive coping styls (the emotional and avoidance coping styles).
Higher levels of paranoia were associated with emotional and avoidant coping, & less use of rational and detached coping.
Also high levels of paranoia were associated with negative attitude to emotional expression, submissive behaviours and lower social rank all assessed by scales.
Suspiciousness is common and there may be a hierarchial arrangement of such thoughts that builds on common emotional concerns.
In psychiatry the term paranoia is an old term, now it is used for referring to a type of schizophrenia were the suspeciousness is way far from normal..hear the story of this man who came before somedays to the hospital very aggitated (offcourse he did not come be himself, his 4 brothers bring him by force)..he was aggressive against his neighbours saying that they are abusing him, when I asked him what did they do to him he start to talk fast with a loud voice and all his body was moving while he told me this story: Mr. A and Mr B (he gave me their actual names and they are his neighbors as I knew later) were travelling around the world holding a syring, they went to the Soviet union, South Africa, France, England and many other countries holding their syring and gathering women from all these countries and taking some fluids from there genital areas (actually he said it in slang Iraqi language with means the vulva) and when they got enough of that fluid they came to me to inject me with that so that I get hypnotised then they cut my penis (he said it in Iraqi slang language) and take it to Israel to make some whitchcraft there...
At that point I was to ask him whether they want his thing to make witchcraft on it, or by it...but I guessed that that won't change my diagnosis of paranoid delusion and it may only let him tell me other details that may make me smile or laugh (these kind of patients are very sensitive to your facial expression which may make them loose their confidence in you), so I decided that what I heard is enough to give him a diagnosis of paranoid delusion...and start antipsychotic while the patient is admitted... He will gain his insight soon I hope...and that will give me and his family and himself the real big smile....