Research has found that personality stabilizes during early adulthood (Terracino, McCrae, & Costa Jr., 2010), meaning that scores on the test will change very little if taken after your early 20's.
Plum’s test also has good test-retest reliability. We found similar Plum Trait and Talent scores for individuals who took the test two times across an interval of 2-4 weeks.
The Discovery Survey is designed to capture your natural, ingrained tendencies. Those tendencies tend to be stable over time. For example, each person tends to have a general tendency to be talkative or quiet (or somewhere in the middle), and this tendency tends to stay consistent across one’s life.
That said, if you deliberately select completely different answers and don't answer honestly, your results will change and may change drastically. Our research demonstrates that authentic, honest responses will provide you with the most valuable information to support you in your career path.