Undergraduate Psychology Dissertation Ideas

Hello everyone,
I’m currently preparing for my dissertation and I’ve chosen to focus on forensic psychology, but I’m finding it quite challenging to narrow down a specific topic due to how broad the field is.
At the moment, I’m considering the following ideas:

- Age differences in crime perception
- The impact of crime dramas on public understanding of forensic evidence
- How crime dramas vs real crime documentaries shape society’s understanding of forensic science

While these topics are closely related and supported by existing research, I’m unsure how to refine them into a focused and original dissertation question, or how best to approach the methodology.

If anyone has experience with similar topics or suggestions on how to develop these ideas further, I would be extremely grateful for your advice or guidance.

Thank you in advance!