Ragashree, I propose that "development" is a process which occurs over time, something which is, for each of us, quite limited.
Would you disagree with either of those assertions?
Edit: You make a valid point. I'm using the term "psychological function" in the Jungian sense, where, for example, "Feeling" would be thought (as a mental activity) with the emotional responses facts elicit as its focus, rather than the facts themselves. All human beings of normal psychological function will experience emotional responses to external situations; what constitutes Thinking in the Jungian sense is focusing our libido (again, in the Jungian sense of free psychological energy) on these facts rather than the emotional responses they elicit.