The Evolution of Pace In Popular Movies
Posted: December 29, 2018 Filed under: film, movies, screenwriting, writing, writing advice from other people Leave a commentAbstract
Movies have changed dramatically over the last 100 years. Several of these changes in popular English-language filmmaking practice are reflected in patterns of film style as distributed over the length of movies. In particular, arrangements of shot durations, motion, and luminance have altered and come to reflect aspects of the narrative form. Narrative form, on the other hand, appears to have been relatively unchanged over that time and is often characterized as having four more or less equal duration parts, sometimes called acts – setup, complication, development, and climax. The altered patterns in film style found here affect a movie’s pace: increasing shot durations and decreasing motion in the setup, darkening across the complication and development followed by brightening across the climax, decreasing shot durations and increasing motion during the first part of the climax followed by increasing shot durations and decreasing motion at the end of the climax. Decreasing shot durations mean more cuts; more cuts mean potentially more saccades that drive attention; more motion also captures attention; and brighter and darker images are associated with positive and negative emotions. Coupled with narrative form, all of these may serve to increase the engagement of the movie viewer.
Keywords: Attention, Emotion, Evolution, Film style, Movies, Narrative, Pace, Popular culture
Over at Cognitive Research: Principles and Implications, James E. Cutting has an interesting paper about how popular movies have changed over time in terms of shot duration, motion, luminance, and cuts.
One thing that hasn’t really changed though: a three or four act structure.
In many cases, and particularly in movies, story form can be shown to have three or four parts, often called acts (Bordwell, 2006; Field, 2005; Thompson, 1999). The term act is borrowed from theater, but it does not imply a break in the action. Instead, it is a convenient unit whose size is between the whole film and the scene in which certain story functions occur. Because there is not much difference between the three- and four-act conceptions except that the latter has the former’s middle act broken in half (which many three-act theorists acknowledge; Field, 2005), I will focus on the four-act version.
The first act is the setup, and this is the portion of the story where listeners, readers, or viewers are introduced to the protagonist and other main characters, to their goals, and to the setting in which the story will take place. The second act is the complication, where the protagonists’ original plans and goals are derailed and need to be reworked, often with the help or hindrance of other characters. The third is the development, where the narrative typically broadens and may divide into different threads led by different characters. Finally, there is the climax, where the protagonist confronts obstacles to achieve the new goal, or the old goal by a different route. Two other small regions are optional bookend-like structures and are nested within the last and the first acts. At the end of the climax, there is often an epilogue, where the diegetic (movie world) order is restored and loose ends from subplots are resolved. In addition, I have suggested that at the beginning of the setup there is often a prologue devoted to a more superficial introduction of the setting and the protagonist but before her goals are introduced (Cutting, 2016).
Interesting way to think about film structure. Why are movies told like this?
Perhaps most convincing in this domain is the work by Labov and Waletzky (1967), who showed that spontaneous life stories elicited from inner-city individuals without formal education tend to have four parts: an orientation section (where the setting and the protagonist are introduced), a complication section (where an inciting incident launches the beginning of the action), an evaluation section (which is generally focused on a result), and a resolution (where an outcome resolves the complication). The resolution is sometimes followed by a coda, much like the epilogue in Thompson’s analysis. In sum, although I wouldn’t claim that four-part narratives are universal to all story genres, they are certainly widespread and long-standing
Cutting goes on:
That form entails at least three, but usually four, acts of roughly equal length. Why equal length? The reason is unclear, but Bordwell (2008, p. 104) suggested this might be a carryover from the development of feature films with four reels. Early projectionists had to rewind each reel before showing the next. Perhaps filmmakers quickly learned that, to keep audiences engaged, they had to organize plot structure so that last-seen events on one reel were sufficiently engrossing to sustain interest until the next reel began.
David Bordwell:

source: Wasily on Wiki
I love reading stuff like this, in the hopes of improving my craft at storytelling, but as Cutting notes:
Filmmaking is a craft. As a craft, its required skills are not easily penetrated in a conscious manner.
In the end you gotta learn by feel. We can feel when a story is right, or when it’s not right. I reckon you can learn more about movie story, and storytelling in general, by telling your story to somebody aloud and noticing when you “lose” them than you can by reading all of Brodwell. Anyone who’s pitched anything can probably remember moments when you knew you had them, or spontaneously edited because you could feel you were losing them.
Still, it’s fun to break apart human cognition and I look forward to more articles from Cognitive Science and am grateful they are free!
Another paper cited in this article is “You’re a good structure, Charlie Brown: the distribution of narrative categories in comic strips” by N Cohn.
Thanks to Larry G. for putting me on to this one.