When did mark twain write The best predictor of future behavior is past behavior?

Mark Twain did not write the quote "The best predictor of future behavior is past behavior." This quote is actually a common saying in psychology and behavioral sciences, reflecting the idea that past actions and patterns can be indicative of future actions. Twain was a renowned American author and humorist known for works such as "The Adventures of Huckleberry Finn" and "The Adventures of Tom Sawyer," but this particular quote is not attributed to him.