Writing about the UK election debates for the New Scientist Raj Persaud and James W. Pennebaker say:
Over the last 10 years, more than a dozen studies have analysed the language of honesty and deception. People are more likely to be telling the truth if:
- their sentences are longer and more complex;
- they use I-words more (e.g. “I”, “me”, “my”);
- they use bigger words;
- they make more references to time and motion, and
- they use more self-reflective words such as “realise”, “understand”, and “think”.
The best markers of deception are “would-should-could” verbs, positive emotion words, and you-words.
I wonder if this applies to writing and whether savvy (or cynical) writers can use this information to manipulate readers.
Probably not. After all, Persaud and Pennebaker finish saying: “Our approach is more accurate than flipping a coin but far from 100 per cent accurate”.