9 simple and effective public speaking tips for scientists

As with most things - preparation is key. The most important part of a successful presentation happens before you even start talking. Once you begin speaking, you'll be thankful for your thorough preparation and practice.

• Create your presentation well in advance and make notes on the key points you want to cover for each slide. This will give you time to gather the materials you need and practise your delivery.
• If you're using handouts, have them ready beforehand. They can also provide a useful backup in case of technical difficulties.
• Practise your presentation in front of a mirror, a colleague, friend or family member, or record yourself. Ask for feedback and review the recording to identify areas for improvement.
• If you're using technical terminology or difficult-to-pronounce words, make sure you're comfortable saying them and explaining their meaning.
• Anticipate questions your audience might ask, particularly about your methodology, results or conclusions.

The more familiar you are with your material, the easier it will be to focus on engaging with your audience.

The way you use your voice can have a significant impact on how your presentation is received. Speaking clearly, varying your tone and maintaining a comfortable pace will help keep your audience engaged and make complex information easier to understand. You don't need to be a naturally confident speaker to communicate effectively; a few simple techniques can make a real difference.

Keep the five 'P's in mind to improve your delivery:

• Projection – Make sure everyone in the room can hear you without shouting. Use a microphone where appropriate.
• Pace – Maintain a steady, comfortable pace. Nerves can make you speak faster, so slow down when explaining complex ideas.
• Pitch – Vary your pitch and tone to emphasise important points and maintain interest.
• Pronunciation – Speak clearly and practise any difficult scientific terminology or unfamiliar phrases.
• Pause – Give your audience time to absorb information and allow yourself a moment to gather your thoughts.

Remember, effective public speaking isn't about delivering a flawless performance. It's about communicating your ideas clearly and helping your audience understand your research.

Easier said than done! However, understanding how nerves affect your ability to speak publicly is a good starting point. Knowing what to expect can help you manage anxiety and continue confidently if you feel nervous.

Firstly, the more prepared you are, the better equipped you'll be to deal with unexpected questions or mishaps. Here are a few practical ways to manage your nerves:

• Be mindful of your caffeine intake before presenting, particularly if it tends to make you feel anxious or jittery.
• Keep some water nearby in case your mouth becomes dry.
• Eat something beforehand so that hunger doesn't affect your concentration.
• Practise your opening sentences until you feel comfortable with them. Getting started is often the hardest part.
• Use breathing or relaxation techniques before your presentation if you find them helpful. Simple exercises, such as slow, controlled breathing, can help you feel calmer and more focused. The NHS offers a useful step-by-step breathing guide that you can practise beforehand.

Remember that your audience is primarily interested in what you have to say. Most people want you to succeed and are there to learn something from your research.

You also don't need to hide every sign of nervousness. Feeling anxious is common, even among experienced presenters, and it doesn't mean you can't deliver an effective talk.

Try to focus less on how you're performing and more on the information you're sharing.

If you're using presentation slides, make the most of them. More than simply looking attractive, your slides should help your audience understand and remember your message.

Adding a little colour and visual interest can help, but clarity should always come first.

Here are a few quick tips to improve your slides:

• Keep the amount of text on each slide to a minimum.
• Make sure text, graphs and other visuals are large enough to be seen clearly from the back of the room.
• Use good colour contrast and avoid relying on colour alone to communicate important information.
• Only include images, videos and animations when they help clarify your points.
• When presenting scientific data, highlight the key findings rather than expecting your audience to interpret complex figures unaided.

You don't want to include everything you're going to say on your slides. Use them as visual prompts to support your presentation, rather than as a script.

Remember that a clear, well-explained graph can often communicate more effectively than a slide full of text.

Every time you give a presentation, take a little time afterwards to reflect on what worked well and what could have gone better.

If your presentation was successful, think about why. Was your explanation particularly clear? Did your slides work well? Did you handle questions effectively?

If something didn't go according to plan, consider what you could change next time.

Ask colleagues or trusted peers for constructive feedback, and pay attention to the questions your audience asks. These can help you identify areas that may need clearer explanation in future presentations.

Remember to acknowledge your successes as well as your mistakes. Public speaking is a skill that develops through experience, and even the most accomplished scientific speakers continue to improve.

This article was originally published on 17/11/2015 and was updated 26/10/26.