2026-02-04
SPeCtrum is a framework for building authentic, multidimensional personas for LLM agents. Based on the SPeCtrum paper (NAACL 2025), it captures human identity through three core components:
S — Social Identity: demographics, education, occupation, socioeconomic background.
P — Personal Identity: Big Five personality traits (BFI-2-S) and Schwartz value orientations (PVQ).
C — Life Context: daily routines, personal preferences, the texture of everyday life.
I built a web survey that walks participants through all three layers. It takes about 60–90 minutes — similar to an MBTI test, but significantly more comprehensive.
The survey includes:
1. Demographics questionnaire (21 items)
2. BFI-2-S personality inventory (30 items)
3. PVQ values questionnaire (21 items)
4. Daily routine and preference essays
It supports both English and Korean, auto-saves progress, and exports results as JSON — ready to be fed directly into a prompt.
The collected data maps onto a structured identity profile. Personality scores break down into the Big Five — Extraversion, Agreeableness, Conscientiousness, Negative Emotionality, and Open-Mindedness. Values span from Self-Direction and Stimulation to Conformity and Tradition.
The life context layer is what makes it feel real: five things you love, five things you hate, and detailed descriptions of your weekday and weekend routines.
All of this gets compiled into a JSON object that serves as the persona prompt for an LLM agent. The result is an agent that doesn't just have a personality label — it has a life.
All responses are anonymous. No personally identifiable information is collected. Data stays client-side and participants can withdraw at any time. The project complies with IRB ethical standards.
This framework is the foundation for the JobFit Simulator — where these personas get dropped into workplace scenarios and evaluated.