If you have the actual study please share it. Right now, I doubt the veracity of psychology today's claims.
In fact I've done more digging since posting this and the only other people talking about this survey is citing psychology today as their source. I can find no primary sources.
You can find other Time articles that cover their methodology, which involves paying a polling (or consulting) firm to run the poll.
> It links to several studies but not the one they're writing about.
Which one do you think is "the one they're writing about"? The Psychology Today piece opens with a description of the current state of affairs.
You might or might not have noticed that immediately after the mention of the Time poll, Psychology Today links to a survey published by the USDA finding that, among self-described vegetarians, 64% reported eating meat within the last 24 hours. Why do you doubt the Time poll?