Your assessor will learn a lot from how you manage and work within a group activity. You need to ensure you are an active participant, but not too aggressive.
Group exercises almost always form the first part of an assessment centre and set the scene for the rest of the day. Employers use group activities to simulate the work the applicants will be expected to do.
The exercise is often based around a case study and you may be required to represent a particular party or you may have to choose which argument you support. Often candidates are separated for 30-45 minutes prior to the start during which time they are given lots of information to read and consider.
It is really important to ‘read between the lines’ as the employer will purposely bombard you with a lot of information to see if you can extract what is important in a short period of time. During the exercise, the assessors sit around the side of the room with scoring sheets and the applicants sit at a table in the middle of the room.