S/P/42. What are the advantages of Frege's distinction between sense and reference over 'psychologism'?

In this essay I shall examine the core content of ‘psychologism’, and Frege’s alternate analysis of sense and reference, or 'sinn' and 'bedeutung', with the view that the distinction between sense and reference was intended to establish the objectivity of Fregean Thoughts. Finally, I will cover some of the problems that Frege’s answer provides before summarizing the advantages such a separation of content provides.