Studies have found that, while financial rewards, such as pay increases and bonuses, can increase productivity, especially when output is quantitatively measurable, such incentives tend to have limited effects over time. By contrast, rewards that are more psychological in nature $-$ for example, when workers add value through innovation and problem$-$solving $-$ tend to enhance productivity in a more sustained way. The first type of motivation is the second type is

intrinsic; extrinsic

extrinsic; intrinsic

general; job$-$specific

job$-$specific; general