Training principles and methodologies are planned during the phase of the Systems Development Life Cycle (SDLC).

this null effect is caused by a weak manipulation and ineffective internal validity. in a scientific study, as the one dr. morimoto is trying to perfom, internal validity refers to the confidence placed in the cause-effect relationship and to how well an experiment is done and able to eliminate confounding variables.        

i think you really need to revive you answer! : d

i think it is the third one.

answer; an active listener;