This has a lot to do with Monday’s post about guiding the reader emotionally. It also has to do with ending a chapter. Whenever you plunge your reader into white space (the white space at the end of a chapter, for example), you run the risk of losing them. So a lot of writers employ some smart tactics to keep this from happening.
I always recommend that you end on a cliffhanger, or introduce a new character, piece of information, or plot complication. Anything that will add tension and make your reader compulsively turn the page and start reading your next chapter. In essence, you never want to end a chapter with the character thinking about how tranquil everything is, or the reader will close the book and go play Xbox.
Well, sometimes you do use something drastic, like a cliffhanger, at the end of a chapter, but there’s the potential for a missed opportunity there, as well. Take this example:
And her father–right there in the flesh, after she thought he’d been dead all these years–walked right through the door.
Wow! Cool! I want to find out what happens, don’t you? Well, this could also be very abrupt if it’s the last sentence of your chapter. And if you tend to do this over and over, it will start to feel like your reader hitting a brick wall with each successive instance. Per the Law of Diminishing Returns, the cliffhanger tactic will also start to lose its tension-rich effectiveness.
One way to mitigate this effect, retain the tension, and also give the reader a more complex emotion than just “surprise” is to always button on character. This means to go back to your protagonist for a reaction before abruptly ending the scene. We get the surprise (or whatever tactic you’re using here), but then we’ll also put it in context, get some emotional resonance, and refocus on the protagonist’s experience of the story. If done right, this packs more of a punch than just a shock. So don’t leave your protagonist and their emotional reaction hanging until the beginning of the next chapter every time. A strong character-focused button will still keep readers invested enough to turn the page.