This invitation is not a guarantee that you will be offered the job. Be prepared with some questions to ask and learn as much as you can about the organisation. Try to maintain a positive but relaxed attitude throughout the day - tiredness or boredom will guarantee being shown the door. Never accept an office visit if you are not serious about taking up an offer. These include Psychometric Tests and Assessment Centres.
Some organisations use generic tests whilst others use a test tailored to their specific needs.
Assessment centres are being used increasingly by employers as part of their selection process when recruiting graduates. The objective of assessment centres is to establish the level to which each candidate exhibits a number of predefined intellectual and personal qualities which are considered important for a particular business. Each exercise or activity that the candidates undertake is designed to provide an opportunity for them to demonstrate some of these qualities and to quantify the extent to which each candidate possesses them. Assessment centres are normally used as a final stage of the selection process. They may also be used to shortlist candidates for interview.