I am toying with the idea of making the PSI Strength attribute represent some sort of a "sixth sense" in addition to gauging the power of actual psionic powers. The idea is to have the Referee secretly roll Psi for every character at chargen, then substract one point from it for every term of service (as usual) and then note down that number, and reveal it only to PCs who recieve PSI training.
Then the Referee could check PSI as any other attribute (i.e. roll PSI or less on 2D) to see if the character gets a "sixth sense" gut feeling in some cases - be that "you get a strange feeling for being watched", to see which PCs get to dream that strange plot-reevant dream, or to find out which PCs see or hear a ghost (essentially the psionic residues of a person who died in an emotionally-heavy situation).
In other words, characters with a high Psi Strength, even when untrained, would be more perceptive to the supernatural (i.e. residual psionics and/or strange physical effects) than characters with a ower Psi Strength. I might add a Psi power or two which will allow trained Psions to enhance this perception and/or act upon it (e.g. "cleanse" psionic residues).
Then the Referee could check PSI as any other attribute (i.e. roll PSI or less on 2D) to see if the character gets a "sixth sense" gut feeling in some cases - be that "you get a strange feeling for being watched", to see which PCs get to dream that strange plot-reevant dream, or to find out which PCs see or hear a ghost (essentially the psionic residues of a person who died in an emotionally-heavy situation).
In other words, characters with a high Psi Strength, even when untrained, would be more perceptive to the supernatural (i.e. residual psionics and/or strange physical effects) than characters with a ower Psi Strength. I might add a Psi power or two which will allow trained Psions to enhance this perception and/or act upon it (e.g. "cleanse" psionic residues).