Question

What are the unresolved problems in the study of personality?

Answer 1

first is your way of talking secondly your thinking

Answer 2

In terms of understanding the human mind, most of the problems are unsolved.   Psychology is mostly descriptive at this point in its history, like astronomy without a theory of gravity (and fairly crude telescopes).  It investigates correlations.  We measure characteristics of personality and identify patterns, but there is no unifying model that explains the mind in its own terms.  Between the bottom-up approach of studying neurons and the top-down approach of intrapsychic investigation is an ocean of the unsolved; we have barely begun to venture from the littoral shallows.