Carel Martten Lechtmets

A plain definition of synthetic audiences: AI-generated populations that behave like real ones, how they are built and calibrated, what they are good for, and what separates a defensible one from a generic LLM wrapper.

The empirical ceiling on survey reliability, derived from test-retest research and Park et al. (2024). A reference for evaluating synthetic audience accuracy claims.

What a cohort is across four research traditions, what AAPOR disclosure elements require, and why cohort precision determines synthetic audience fidelity.

The individual record in a synthetic study: how it differs from a persona, cohort, or audience; grounded vs prompted approaches; where it works and where it fails.

The person-level building block of a synthetic study: how personas differ from respondents and audiences, why grounding in real data matters, and what separates a defendable persona from a stereotyped one.

AI focus groups come in two distinct formats: AI moderators running parallel interviews with real humans, and fully simulated discussions among LLM-generated personas. This article disambiguates the two, covers what each can and cannot do, and explains how both sit relative to quantitative synthetic audiences.

A plain definition of likely voters: how pollsters construct them, why the screen is contested, and how a likely-voter cohort maps onto synthetic audience research.

A crosstab (cross-tabulation) is a table that shows how survey answers break down across respondent segments. The most common artifact in market research, and the output format Replism delivers.