The clinical trial confirmed the efficacy of the new vaccine against the virus.

The clinical trials measured the efficacies of the new vaccines against emerging variants.

The committee concluded that the new policy was more efficacious than previous measures in reducing emissions.

The new training program enabled employees to apply their skills efficaciously on complex projects.

The committee assessed the efficaciousness of the new policy before recommending broader implementation.

Her strong self-efficacy helped her tackle the challenging project with confidence.

Researchers compared the self-efficacies of students from different cultural backgrounds to understand how belief in one's abilities varies.