Identify the way to enter the discussion. In a loud GD where there are three or four aggressive participants, and where a number of people tend to speak at the same time, it becomes difficult for others to get a chance to speak. This is the most frequent problem encountered by participants. There is no foolproof solution to this problem. And such a situation is pretty much likely to prevail during the actual GD that you participate in. However, it is crucial that you speak. How can you do this?

Some guidelines on interjecting in a loud GD: You will have to decide which one is appropriate.

Enter the troughs: Every GD has its highs and lows. There are times when the noise level is high and times when it is low. You could wait for the lows and time your interjection then. However, in some GDs, if one waits for lows, he/she would never get a chance to speak.

Enter after a person has made his point: The success of an interjection depends not only on assertiveness but also on the receptiveness of others. If you interject when someone else has just begun speaking, before he has made his point, it is unlikely that he will let you have your way. On the other hand, if you wait till he has made some of his points, he will be more amenable to letting you speak. But don’t wait too long!

Enter with a supportive statement: A useful way of starting your interjection is by supporting a point that has just been made. People will let you speak if they think you agree with them or if you praise them. Try starting by saying something like, “I agree with that point and I would like to add . . .”
Alternatively, praise the person who had just spoken by saying, “I think that is a very important point . . . “. In all probability, he will let you speak. Once you have the floor, you could either extend the argument or you could switch tracks by saying, ” . . . however, before we spend more time on that issue we should be discussing . . .”

Enter by increasing volume: The most natural way of entering when you find that others are not listening is to raise your voice. This is not the smartest way of interjecting and in a GD where everyone is shouting, there is a only slight chance that it would work. To be effective, however, you will have to combine this tool with some of the others mentioned, as it is unlikely to succeed on its own.