I have a BSc in Psychology, but I want to change subjects and study computing. In particular a Masters in Human-Computing Interaction, Robotics, or Informatics.

I was wondering if it is necessary for me to take a CS conversion course first?

I have noticed a lot of masters do not require a full undergraduate CS degree - just some background in computing and programming. I've already taught myself Python and javascript, and I have a full 16 months before I start a masters.

Would people who have studied computing recommend I take a conversion course, or keep self-studying and jump straight into a more advanced masters?