Intra-individual variation of extreme response style in mixed-mode panel studies

► The article examines intra-individual variation of survey response styles. ► A mixed-mode panel design is used to study change in extreme response behavior. ► A latent class transition model separates stable and volatile respondents. ► Extreme response style was stronger in mail-back than in face-to-face surveys. ► Ideological extremity and low education correlate with response style change.