Mr. Trump’s performance on the national stage in recent weeks has put on display the traits that Democrats and some Republicans consider so jarring — the profound need for personal praise, the propensity to blame others, the lack of human empathy, the penchant for rewriting history, the disregard for expertise, the distortion of facts, the impatience with scrutiny or criticism. For years, skeptics expressed concern about how he would handle a genuine crisis threatening the nation, and now they know…

Mr. Trump’s defensiveness over the pandemic has become a central dynamic inside the White House as officials wrestle with difficult policy choices. Aides have long understood that Mr. Trump needs to hear support for his decisions, preferably described in superlatives. He often second-guesses himself, prompting advisers to ask allies to tell him he made the right call or go on Fox News to make that point in case he might be watching.

Over the last week, as Mr. Trump has faced ever more draconian and expensive options, Jared Kushner, his son-in-law and senior adviser, sought to coax him into action by using bits of praise in news coverage or from other officials as a motivator, according to people familiar with the discussions.

Officials have learned that the president craves a constant diet of flattery, which they serve up during daily televised briefings.