Other well-meaning tactics involve pushing them into some embarrassing party participation role, like forcing them onstage for karaoke, making them chug something, pushing a stripper on them, or whispering to the waiter at T.G.I. Friday's on their birthday so the whole staff will come over and sing one of those humiliating songs, all in the name of getting the person to "loosen up" and "come out of their shell."
Even worse, when they do gamely participate, the horribly awkward results are often applauded with extremely fake and over-the-top enthusiasm, as if the person's budding confidence is extremely fragile and every sign of progress must be heavily nurtured.
"Man, you really ROCKED that version of 'Don't Stop Believing'! Who knew you were such a wild man!"
The root problem is projection. A lot of people just think, "If I wasn't talking, that would mean something was wrong, and I would want someone to pay attention to me, put me on the spot, and push me into something crazy. That would snap me out of it!" Which is probably true for them, but different people have different personalities, and for some people, that's the wrong cure entirely, while for some other people, it's not even a problem that needs a "cure."
Before jumping right into "helping" a quiet person, maybe it's best to figure out what's behind their lack of chattiness. Which is a whole new set of misconceptions, like ...