I see that it states you are a current senior; I would also update your question to state that you are currently pursuing your Bachelor's degree versus you "have" your degree - it will help with the guidance provided as it can certainly differ.
What is your qualitative research project about? Have you enjoyed the project thus far? If so, perhaps the next step is to complete an internship within research in industry versus academia. Perhaps look for internships that specify Market Research, Data Scientist, Data Analyst, and the liking. I would not wait until January 2019 (or even 2018 if that is what you meant) to do an internship; it's wonderful that you have an internship lined up and you should do a summer internship as well. This will help you identify prior to graduation if you enjoy the hands-on experience.
Having your Psychology degree will enable you to go into several directions if you do decide to pursue your Master's degree. In some fields it is necessary to earn a Master's degree; in other fields it's not necessary at all.
The recap of advice is to gain hands-on internship experience this year and that will help you determine if you actually like what you think you do. And then the follow-up to that will be to determine what exact career path you'd like to do (i.e. they are many directions to go in Research) - that follow-up answer will finally determine if you continue on to graduate school or start your career immediately.