How much social loafing helps to work in group?

For the studying one, that sounds about right. When studying in a group, you can share ideas and help each other out. I actually find that when I explain something to someone, it helps to increase my own understanding of the material. For the working one, I think it depends on the group members. When working as a group, I find it helps if there is a leader in the group, someone who knows what they're doing and what needs to be done. This person will ensure the project is getting done, and everyone is doing their portion of the work. Without someone like this, I find it gets very hard for anything to get done. I have been in groups many times before where nothing gets done within the first 1-2 weeks and we end up having to hurry along to get the project finished on time. Then, sometimes, there's a slacker in the group, one who, as my instructors always say, "rides along with the rest of the group." You give him work to do and he takes too much time in getting it done, which, of course, drags everyone else down as well. A couple of times, it got so bad, I decided to do the work for that person just so that it would be done. There was also an instance, actually, where a group member was kicked out from our group because he wasn't doing any work at all. But if the group members are fine, like if they are all really hard-working, then productivity should only increase. In fact, I always find that, in a class, there's always at least one group that goes above and beyond what anyone's expectations are. These are the ones that are the most productive.