In this paper, the reasons are investigated why subjects in strategically advanced position in different one-shot games behave deviated from profit maximising strategy. It is well known that offering any share of the pie in a dictator game, proposing a fair (half or nearly half) part of the pie in an ultimatum game or returning any amount in a trust game can be considered deviated from the profit maximising behaviour. The finding of the paper is that these behaviours are possibly based on internal feelings or thoughts of the subject that are attributed onto their partner through the psychological process of projection. Experimental evidence is provided from ultimatum and trust games on the presence of this so called projective reasoning that seems much better predictor of behaviour of proposers in ultimatum games or trustees in trust games than the game theoretic reasoning.