According to the guide, candy has the same effect as the praising glove, only stronger. It says nothing about affecting the peeps stats.

At a guess, sometimes the foreign candy tastes nice, and acts like a praising glove, and other times it's nasty, and acts like the scolding glove. The time I tried it it must have been nice, as I got the same result as flybabytina, but it's a risk ...