olemus
motiveeriv vahend või tegur, näiteks preemia

Wiktionary, noun:
1. something that motivates, rouses, or encourages
2. a bonus or reward, often monetary, to work harder

ülevaateid
https://en.wikipedia.org/wiki/Incentive

http://www.iosrjournals.org/iosr-jbm/papers/Vol17-issue7/Version-2/I017726470.pdf

https://ijbssnet.com/journals/Vol_5_No_8_July_2014/31.pdf