A candidate can always receive a result that he/she does not deserve due to for example a lack of concentration, or simply clicking through the items quickly without trying to do it correctly, or due to completing the test in a less than optimal environment. Other possible reasons are that they did not try because of a lack of motivation. However, the candidate can never receive a result that is better than he/she deserves. We recommend using Matrigma early in the process in order to screen candidates. This way, one can easily separate the candidates with low scores as well as the candidates that are not motivated and thereby avoiding having low scores become a problem.
If a candidate completed Matrigma at two different times and there was a substantial discrepancy between the scores (a low vs. a high score), we strongly recommend that you ask the candidate to retake Matrigma in a controlled environment (e.g. physically at your office). This way you will know that the correct candidate took the test (otherwise this may be the explanation for the discrepancy in the results) and you will also know that the test conditions were optimal. Communicate clearly that the test that is completed in the controlled environment is the result that will be used in the decision process.
Invite the candidate to your office in connection with an interview to complete Matrigma (preferably before the interview).