efficacy

Regardless of what the Trump administration does, the efficacy of ballot measures may be limited in states under Republican control.

It also directed that a committee be set up to look into the feasibility of moving power lines and the efficacy of bird diverters - devices that have reflectors and are attached to power cables to alert birds about their presence.

While most experts agree that social media platforms can harm the mental health of adolescents, many are split over the efficacy of trying to outlaw them all together.

But even back in 2012, there were those who realized that the fact-checkers’ efficacy relied on the public’s willingness to accept their authority.

Evidence for canvassing’s efficacy is vexed, however: social scientists have shown the practice of going door to door to have near-zero persuasive power, and, unless the message is highly personalized, an uncertain effect on turnout.