How is the time complexity of inserting an element into the middle of a linked list evaluated?

The time complexity of inserting an element into the middle of a linked list is estimated to be O(n), where n is the number of elements in the list. This is because, to insert in the middle, you first need to traverse the list to the desired position, which takes linear time. The actual insertion process (pointer adjustment) is performed in O(1), but the search for the position dominates the time.