A sharp partisan divide remains over how involved researchers should be in policy decisions.

For the first time since the start of the coronavirus pandemic, the public’s trust in scientists has improved, according to a survey published Thursday by the Pew Research Center.

About 76 percent of Americans say they have confidence that scientists act in the public’s best interest, a modest but significant improvement from last year but about 10 points lower than the figure before the pandemic.

This year’s uptick was driven largely by a slight increase in trust among Republicans, a group that also experienced the steepest drop in confidence during the pandemic, said Alec Tyson, a Pew researcher and the report’s lead author.

Still, the roughly 9,500 Americans surveyed were divided over whether scientists should play a role in policy decisions — a particularly timely issue now, as President-elect Donald J. Trump prepares to appoint leaders of the country’s science and health agencies.

About half of the survey respondents said experts should take “an active role” in policy debates about scientific issues, like childhood vaccines and climate change, while the other half said they should focus instead on “establishing sound scientific facts.”

Respondents were largely split along partisan lines: 67 percent of Democrats believed scientists should be involved in policy debates, compared with just 35 percent of Republicans.

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