activity actuation animation aptitude aptness brightness catalyst cleverness direction docility dynamics educability facility going impetus impressionability impulse incentive incitation incitement influence inner-direction instigation intelligence kinematics kinesipathy kinesis kinesitherapy kinetics malleability mobilization moldability motion move movement moving other-direction plasticity pliability prompting quickness readiness receptivity restlessness running spur stimulant stimulation stir stirring susceptibility teachability teachableness trainableness unrest velocity willingness