The roadblocks to communication include warning or threatening, disagreeing, judging, criticizing, blaming, agreeing, approving, praising, withdrawing, distracting, humoring, and changing the subject. These behaviors hinder effective communication by creating a negative or defensive atmosphere, preventing open and honest dialogue. Warning or threatening can intimidate the other person, while disagreeing, judging, criticizing, and blaming can make them feel attacked or devalued. Agreeing, approving, and praising excessively can also hinder communication by avoiding conflict or ignoring important issues. Withdrawing, distracting, humoring, and changing the subject divert attention from the conversation, preventing meaningful exchange of ideas.