Germany's Institute for Economic Research (Ifo) said on Monday that its quarterly World Economic Survey index had fallen from minus 2.2 points to minus 13.1 points in the first three months of the year.
The global survey of 1,293 experts from 122 countries, conducted four times a year, indicated that "the global economy is becoming increasingly weak," Ifo chief Clemens Fuest said in Munich.
The figure for the quarter is the worst recorded since 2011.
Though growth in emerging and developing economies had stabilized since last year, growth in the United States and the European Union had been revised down across the board, according to Fuest.
"The experts expect weaker growth in private consumption, investment and world trade," he added. "Although the majority of respondents still expect an increase in short- and long-term interest rates, their numbers have fallen sharply. They expect a worldwide devaluation of the US dollar."
Notice: No person, organization and/or company shall disseminate or broadcast the above article on Xinhua Silk Road website without prior permission by Xinhua Silk Road.