A Vicious Cycle? Group-Level Analysis of Intra-Individual Dynamics in Mental Health Variables. - Bommer, Jana; Schwartz, Brian; Klein, Christine; Rupp, Jan; Katalinic, Alexander; Assmann, Nele; Borsche, Max; Balck, Alexander; Föh, Bandik; Lutz, Wolfgang; Klein, Jan P. (Cognitive Therapy & Research, 2025)