I ran across this article and thought some here might be interested to comment. (The authors primary research focus is detecting Alzheimer's or other form of dementia through writing. I have NOT done a deep dive into their work or looked for updates on their research. I don't think that's relevant to the subject of the linked article or this post.)
They note that Agatha Christie's novels range from 49.17% dialogue in The Mysterious Affair at Styles published in 1920 to 65%, 79%, and 76% for three novels published in the 1970s. It's a fairly steady climb over seven novels (though I note they skip any published between 1930 and 1971).
Then there are these four paragraphs.
A relatively high proportion of dialogue is a common characteristic of genre novels โ thus Arthur Conan Doyle's 1892 The Adventures of Sherlock Holmes has 46.95% characters within quoted strings; Bram Stoker's 1897 Dracula has 47.46%; G.K. Chesterton's 1908 The Man Who Was Thursday has 60.08%;, and Josephine Tey's 1946 Miss Pym Disposes weighs in at 42.54%.
Not all novels are like this: Thus Virginia Woolf's To The Lighthouse has just 3.27% characters within quoted strings; her Jacob's Room has 10.17%; Ernest Hemingway's The Old Man And The Sea has 15.03%; his The Sun Also Rises has 29.40%; Margaret Atwood's Lady Oracle has 14.01%; Thomas Pynchon's The Crying of Lot 49 has 23.99%.
Some non-genre novels have higher proportions: The Great Gatsby has 51.32%; Martin Eden has 50.58%.
And some genre novels are more narrative-heavy: The Da Vinci Code has 29.59%.
They then note that Elmore Leonard's novels also show more dialogue over time, from 33.73% in 1954 to 60.70% in 2012.
They conclude with this:
There are a lot more data points to consider โ Christie wrote more than 70 novels, and Leonard has written 60 or so. But this small sample suggests that a trend towards more dialogue over the course of an author's career is not implausible.
So, sport checking my work with ProWritingAid, I'm seeing chapters running from zero dialogue (only one I found in sampling - and it is very unusual) to just over 50%. Don't know what that means, but, just putting it out here since I'm bringing up the topic! I also notice that some, but not all, of the works I enjoy reading on SOL seem to be dialogue heavy, though I haven't analyzed any chapters.
So, thoughts?