Yes - I remain exactly the same person I was, since my very early childhood, when I started to show my personality traits for the first time. Minus, of course the natural, minor - very minor - differences that have their source in the fact of the natural development of my personality over the course of years, due to the experiences that have shaped me in this or that manner. I don't believe actually, that people change as such - we just develop and deepen what there already is about us, reaching the very core of our personality that remains intact in this respect, whether you are five or eighty five. I, at least, haven't changed per se with the passage of time - I am just developing and deepening what there already is in me
Or at least I haven't changed since I finally entered my teens - exactly the quarter of century ago - and developed the ability of abstract thinking - because as a kid, regardless of how smart, mature and generally wise beyond my young years I was, I couldn't perform the same thought operations as adults. As a teenage girl - I was able to do it. Whether I was 13 or 38 (as of now), I was mentally the same - the same way of thinking, behaving, verbalizing my thoughts etc. Later any differences between myself at different stages of my life starting from my early teenage-hood, boiled down merely to quantity (as in the increasing number of my life experiences and knowledge I acquire over the course of years) and not quality (like in childhood, when even two years were a big difference between my way of thinking at different stages of my childhood).