First make sure you are comparing the same test
The classic, expanded, and full versions of this site contain 24, 93, and 144 questions respectively, covering different combinations of items. Old version 16 and 40 question records may still appear in history. Different websites may also use different question banks and algorithms, and letter changes between these tools cannot be directly interpreted as personality changes.
Back to specific answers to changes
When comparing two records, first find which dimension has changed, and then find which questions have different answers. Think back to whether you were thinking of work, family, or social situations when you answered. Writing down these situations is often more informative than pursuing the same set of letters over and over again.
Don't memorize answers just for stability
When re-answering, choose based on recent real experience. Do not copy old answers just to keep your favorite type. If the question doesn't fit your experience, choose neutral and keep an eye on the number of neutral answers in the results.
Nothing can be inferred from this site
We have not published a test-retest study, so we cannot promise that the same results will be obtained after a period of time, nor can we judge whether the mental state has improved or deteriorated based on two score changes. The results are better suited as self-observation records.