ESP means extrasensory perception. Science has not established ESP as a reliable source of hidden information, but a structured guessing exercise can help you study attention and first impressions.
Short lesson: hidden colors
Ask a friend to secretly choose red, yellow, or blue. Take one breath and write the first color or image that appeared. Reveal the answer and mark a match or miss. Complete five trials and save every result rather than remembering only surprising matches. One match proves nothing; honest misses are useful.
Keep this low stakes. Important medical, legal, financial, safety, and mental-health decisions require evidence and appropriate professional guidance.
For a guided concealed-picture version, open Train Your Knowing, choose a colored square before the reveal, and compare your impression with the result.