Critics doubt that the new workers will keep their jobs in a recession.

But friends and critics doubt that he is content.

Despite the song's title, critics doubt whether the work is actually ragtime.

And without stronger corporate controls, critics doubt that change will ever occur.

Other critics doubt its impact, saying instead that grievances mobilize people, not technology.

However, many critics doubt the authenticity of those statements.

Critics also doubt the merits of pharmaceutical testing on prisoners who often lack basic health care.

Critics have doubted that Litvinenko is the true author of the released statement.

Critics doubted that, once matched against all comers, he could be competitive.

Some critics have doubted the existence of the unconscious.