how to diffentiate sincere act and phoniness.?

answers1: Often one act is not enough to be able to tell for sure.
What is the pattern of the person? Is the act an isolated event? What
does the person do when he or she doesn't think others are watching?
answers2: It'll be easier to tell when you know the person long enough
- his/her characters, personalities, etc... <br>
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For me, I am somewhat able to read people mind. Based on the person
speech and looks, I could tell whether the person is since or not.
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I shall give you some tips: <br>
1) Listen when the person speak, does he/she sounds sarcastic when
talking to you? <br>
2) Look at his/her eyes when talking, see if he/she is rolling her
eyes or keep focusing on somewhere other than looking into your eyes -
if so that person is insincere. <br>
3) Notice his/her normal behaviours. <br>
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Hope these will help...
answers3: Sincere act is lasting, it stays, it doesnt change, bcause
its part of the person deep emotions, its not about winning brownie
points, like phoniness. Phoniness is temporary, it changes with the
wind, its superficial only to be part of the action.
answers4: A sincere act is made with no expectation of reciprocation
or recognition.