Table 1.
Examples of sentences.
| Sentence type | Example of question | Truth teller expected response | Liar expected response |
|---|---|---|---|
| Control YES N = 10 | I am in front of a computer. | Truth | Truth |
| Control NO N = 10 | I am climbing a mountain. | Truth | Truth |
| Simple YES N = 10 | I was born on 20th April. | Truth | Lie |
| Simple NO N = 10 | I was born on 08.15.1990. | Truth | Truth |
| Complex YES N = 10 | In 1987, I was born in April in Trieste. | Truth | Lie |
| Complex NO N = 10 | I was born on 20th April 1987 in Ortona. | Truth | Truth |
Liars have to respond by lying only for simple and complex YES sentences. If the examinee's real date of birth is 15th October, responding YES to “I was born on 20th April” will be a lie.