Four years ago, technology companies were widely seen as having a positive impact on the United States. But the share of Americans who hold this view has tumbled 21 percentage points since then, from 71% to 50%.

Negative views of technology companiesā€™ impact on the country have nearly doubled during this period, from 17% to 33%, according to a new Pew Research Center survey. Nearly one-in-five (18%) now volunteer their impact has been neither positive nor negative or that it is mixed, or they offer no opinion.

The survey, which asks about the impact of seven major institutions and groups ā€“ including banks, universities, the news media and religious organizations ā€“ finds that no more than about half of U.S. adults say any of them are having a positive effect on the country.