"boosted motivation" is correct and can be used in written English.
You can use the term when referring to a person's enthusiasm, energy, or drive to accomplish a task or goal, or to do something in general. For example, "John's success in the project boosted his motivation to stay focused and work even harder."
Besides, the relationship between motivation and exam performance was likely to be bidirectional, as higher motivation resulted in better performance, which in turn further boosted motivation.
In all cases, as described in a forthcoming issue of the journal Psychological Science, the combination of coming close, yet losing, boosted motivation in ways unrelated to the original competition.
We are gratefully leaving the Philippines with a strengthened belief in UNICEF, and a boosted motivation to help facilitate people like Butch and Francis around the world.
It might be possible to champion other moral/academic codes to boost motivation in places where it is absent.
That could boost motivation, since, as Ireson says, responsibility and reward would be shared among a small group of friends or relatives, rather than the more general concept of "the cooperative" or "the state".
To boost motivation for knowledge exploration, many instructors are adding elements of high interest to students to their teaching materials and activities.
The first healthy habit should be one that makes a big impact to help boost motivation.
In each of the next few years, we'll get better a customizing instruction, boosting motivation, and improving access to quality learning experiences.
Tailoring services to smokers' choices is likely to boost motivation and resulting quit rates.
Cash incentives have been shown to boost motivation to quit [ 45, 46].
In this context, maximizing time and boosting motivation are two of the most important aspects.
