My DB and his wife do baby talk to their DD3 - drives me nuts. For the longest time, they had the stupidest names for everything: bottles, blankets, toys, animals, cups... the list would go on and on. My DH and I would just about lose our minds when we heard this. All I could think of was no wonder their DD was not speaking as clearly as our DD. We do not do baby talk, not even with our DD7mo.
Katelyn'sMom, from what I have read about correcting speech, you might be careful about how often you do that. I've read that this can lead to stuttering and low self-confidence. When my DD has incorrectly pronounced a word, I'll do the "yes," and correctly say the word. This has not reinforced the mispronunciation, but rather eventually she will learn to pronounce it correctly without feeling as if she's doing it wrong. After all, DD is only 3 and she's bound to mispronounce words (currently Play-Doh is "tay-toe"). My DD is already so much a perfectionist that I do not want to feed the need for perfectionism any more. Being a perfectionist myself, I don't want my DD feeling like she has to do everything right in the first try and that it's okay to do something wrong (I still struggle with this and it has greatly impacted my life in every way imaginable). Just a thought.
BaseballDad, I will have to take a look at the book you mentioned. Thanks for the tip.