Throughout the film, Violet and her colleagues refer to people taking part in their psychology experiments as "subjects". This term is no longer used in psychology (and has not been used for decades) as it is thought to be disrespectful and has unethical, dehumanising connotations. Rather, today psychologists use the term "participant" to refer to people who take part in an experiment.
How much sex, violence, and profanity are in this movie?
For detailed information about the amounts and types of (a) sex and nudity, (b) violence and gore, (c) profanity, (d) alcohol, drugs, and smoking, and (e) frightening and intense scenes in this movie, consult the IMDb Parents Guide for this movie. The Parents Guide for The Five-Year Engagement can be found here.
Is 'The Five-Year Engagement' based on a book?
No. The screenplay was written by American screenwriters Jason Segel and Nicholas Stoller.
A Note Regarding Spoilers
The following FAQ entries may contain spoilers. Only the biggest ones (if any) will be covered with spoiler tags. Spoiler tags have been used sparingly in order to make the page more readable.