males and females.

H2: Age. There was also a decrease in usage as a function of age group, with groups of older users being less likely
to have used LLMs than younger users (18-24: 58.2%, 25-43: 52.7%, 35-44: 44.2%, 45-54: 40.9%, 55-64: 29.6%, 65+: 29.3%;
all pairwise comparisons of posterior predictions are distinguishable at 𝑝𝑏 < 2.5%, except the comparisons of the
neighboring categories 18-24 to 25-34, 35-44 to 45-54, and 55-64 to 65+). In sum, the initial usage of LLMs becomes less
likely in relatively older age groups. Interestingly, we usage in middle-aged groups using LLMs was more frequent than
in young adults (55-64 > 18-24: 𝑝𝑏 = 1.95%; 55-64 > 25-34: 𝑝𝑏 = 1.18%; 55-64 > 25-34: 𝑝𝑏 = 1.35%, all other 𝑝𝑏 > 2.5%).
Thus, the results support H2 in terms of adoption but only partially for usage frequency.
Adoptionand AppropriationofLLMs