Defenders of the passive voice

I mention in my book, The Scientist’s Guide to Writing, that there are few better ways to get academics arguing than to bring up the topic of the passive voice.  I’m reminded of this every time I get into a discussion of voice, either online or in person, in my department.  As you’d expect for a topic provoking argument, there are strongly held opinions on both sides: that scientific writing should use the active voice, or that the passive voice should be used instead*.

In general, I’m a passionate advocate for the active voice (although I acknowledge that a reasonable person can disagree).  Either on Twitter or in real life, I’ll often say something about avoiding the passive, and almost always somebody will come back with an objection.  These objections take a number of forms, both among different objectors but also within a single objector’s argument.  Two things interest me about patterns in those objections.

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Why do not we use contractions in scientific writing?

Scientific writing has a reputation for being dense, even occasionally impenetrable. Partly that’s because we write about intellectually complex matters using (necessarily) a highly technical vocabulary. But our writing becomes denser still because we love condensed words: acronyms, initialisms, and abbreviations*. As an example, consider this sentence:

To evaluate the role of extracellular cAMP in sperm capacitation, 10–15 × 10⁶ spermatozoa/mL were incubated in 0.3% BSA sp-TALP at 38.5°C and 5% CO₂ atmosphere for 45 min in the presence of 0.1, 1 or 10 nM cAMP (Osycka-Salut et al. 2014 Molec Human Reprod 20:89-99).

I’m not picking on these authors – such sentences have become completely unremarkable in our literature. What’s interesting about this, though, is that there’s a peculiar exception to our passion for condensed words: a general refusal to use common contractions (don’t, it’s, we’re, etc.) in scientific writing.

Dealing with the defect in English

Image credits: Dinosaur comics #2079, © Ryan North

(This post will be of interest mainly to grammar buffs, language pedants, and people writing books.  You’ve been warned!)

English is a wonderful language, a difficult language, and a frustrating language. It has 350,000 different words, or maybe 1,000,000 (depending who you ask) – but it’s missing two really important ones: a pair of gender-neutral 3^rd-person singular pronouns. We have he/she and his/her, but no nongendered equivalents. That’s a real problem for a writer who wants his or her (see?) language to be inclusive, and in the 21^st century it’s surely a defect in our language*.