Presupposition
Definition
Information built into a question as a taken-for-granted background assumption. Asking 'Why did you go back?' presupposes the person went back. The interviewee who answers the question at all has implicitly accepted the presupposition.
- How it works
- A presupposition embeds an assumption into a question's grammar. Answering it implicitly accepts the presupposition.
- Forensic contexts
- Common in police interviews and courtroom cross-examination, where presuppositions can be used to elicit agreement to claims without explicit negotiation.
- Risk in discourse
- An interviewee or witness may accept a presupposition by simply answering, without realizing they have done so.
Common questions
What happens when an interviewee answers a question that contains a presupposition?+
By answering the question, the interviewee implicitly accepts the presupposition built into it. For example, answering 'Why did you go back?' accepts the assumption that you did go back. This can be a significant issue in forensic interviews because the answer can be used to support claims the interviewee never consciously agreed to.
How do presuppositions work differently in courtrooms versus police interviews?+
In both settings, presuppositions embed assumptions into the grammar of a question itself. In cross-examination, a question's structure treats a proposition as already established fact, and the witness who answers without challenging it has implicitly accepted that proposition. The witness may not realize the background assumption is being treated as settled.
Can someone avoid accepting a presupposition?+
Yes, but it requires active awareness. An interviewee or witness can refuse to answer the question, challenge the presupposition directly, or answer in a way that explicitly rejects the assumed premise. Without one of these moves, answering the question usually signals acceptance of what was presupposed, even if unintended.
Related terms
- Leading question
- A question that signals or contains the expected answer. 'You were angry, weren't you?' is leading because the expected answer is embedded....
- Code-switching
- Shifting between different registers or even different languages within an interaction, often as a signal of role or authority. An interviewer who...
- Cross-examination
- Questioning of a witness by the opposing party. For an expert, cross-examination probes qualifications, methodology, the basis of opinions, limitations, inconsistencies with...
- Examination-in-chief
- The questioning of a witness by the party who called them. For an expert, this is typically limited because the substance is...
- Institutional talk
- Conversation that takes place within an institutional context (courtroom, interview room, medical consultation) and is shaped by that context: one participant controls...
- Reformulation
- An interviewer's restatement of what the interviewee just said, often shorter or differently framed. If the interviewee does not correct it, the...
- Response constraint
- The structural limits on what a witness can say given a particular question type. A yes/no question formally permits only yes or...
- Tag question
- A short interrogative attached to a declarative, such as 'You left at midnight, didn't you?' The grammatical form invites agreement and is...
- Turn-taking asymmetry
- The structural imbalance in a police interview where the officer holds nearly all the conversational rights: who asks, who answers, when a...
Explained in these topics
- Police Interview Discourse: Power, Questions, and ControlInformation built into a question as a taken-for-granted background assumption. Asking 'Why did you go back?' presupposes the person went back. The interviewee...
- Courtroom Discourse: Examination, Cross-Examination, and Question ControlA proposition treated as already true by the grammar of a question, regardless of whether the speaker or listener has agreed to it. Answering a question usuall...