RT Article T1 Opening the black box: A multilevel framework for studying group processes JF Advances in methods and practices in psychological science VO 2 IS 3 SP 271 OP 287 A1 Lang, Jonas W.B. A2 Adler, Amy B. 1963- A2 Bliese, Paul D. LA English YR 2019 UL https://krimdok.uni-tuebingen.de/Record/1912641526 DO 10.1177/2515245918823722