Host Ira Flatow is joined by reporter Bob Holmes to talk about his coverage of the role of interjections in conversation. This story was originally published in Knowable Magazine. But these little ...

Listen carefully to a spoken conversation and you’ll notice that the speakers use a lot of little quasi-words—mm-hmm, um, huh? and the like—that don’t convey any information about the topic of the ...

But these little words may be much more important than that. A few linguists now think that far from being detritus, they may be crucial traffic signals to regulate the flow of conversation as well as ...