Critics of the president’s economic approach were somewhat heartened by reports that Mr. Erdogan is expected this weekend to appoint Mehmet Simsek, a former finance minister and deputy prime minister, to the cabinet. Mr. Simsek is well thought of in financial circles and has previously supported a tighter monetary policy.

“What Turkey really needs now is more exports and more foreign direct investment, and for that you have to send a signal,” said Henri Barkey, an international relations professor at Lehigh University. One signal could be Mr. Simsek’s appointment, he said.

Mr. Barkey argues that Mr. Erdogan will have no choice but to make a U-turn on policy by winter, when energy import costs rise and some debt payments are due.

Others are more skeptical that Mr. Erdogan will back down from his insistence that high interest rates fuel inflation. Kadri Tastan, a senior fellow at the German Marshall Fund, a public policy think tank based in Brussels, said that regardless of the cabinet’s makeup, he didn’t believe a policy turnaround was imminent.