Fig. 5: Ridge plots showing distributions of Flan-PaLMChilla 62B’s Big Five personality
scores on the IPIP-NEO as each domain (i.e., extraversion, agreeableness, conscientiousness,
neuroticism, and openness) is prompted at nine different levels. Each column of plots rep-
resents observed IPIP-NEO scores for one Big Five domain across prompt sets. Each row
of plots represents experiments for one prompt set that attempts to shape LLM scores for
a single Big Five domain at nine prompted levels. Plots along the diagonal, from top-left
to bottom-right, depict the success of the intended personality adjustment. Each ridge plot
comprises nine traces showing distributions of LLM-simulated IPIP-NEO scores of the col-
umn’s dimension. For instance, the second graph in the third row represents the density plot
of responses on the IPIP-NEO Agreeableness subscale—each trace representing a prompted
level of conscientiousness (bottom-most trace in that graph represents level 1, while topmost
PersonalityTraitsinLargeLanguageModels