It's known as the 'James Bond intro', where basically you invert the well worn intro, method, exciting results formula by putting the sexiest part first, just like how James Bond/many action films these days start with a thrilling intro. In my experience it can work well - the audience immediately grasp the point for sitting through any challenging content, safe in the knowledge the outcome is rewarding. Also if you return to it later there's a reinforcement element. Of course it relies either on having eye candy or results that are or can be competently portrayed as being amazing.
The effect is supposedly about lighting up the reptilian brain, and you can drop further limbic system boosts throughout your talk to raise arousal level (heart rate, adrenaline) of your audience, which supposedly keeps their interest high. I learnt this on a demo course, perhaps it's just obvious didactic technique.
I should add it's obviously high stakes but can really make your talk stand out, especially if your talk is within a series of conventionally structured talks.
The effect is supposedly about lighting up the reptilian brain, and you can drop further limbic system boosts throughout your talk to raise arousal level (heart rate, adrenaline) of your audience, which supposedly keeps their interest high. I learnt this on a demo course, perhaps it's just obvious didactic technique.
I should add it's obviously high stakes but can really make your talk stand out, especially if your talk is within a series of conventionally structured talks.