RT Article T1 Subjective well-being and significant life-events across the life span JF Swiss journal of psychology VO 54 IS 1 SP 3 OP 18 A1 Grob, Alexander LA English YR 1995 UL https://krimdok.uni-tuebingen.de/Record/163936871X K1 Kritische Lebensereignisse K1 Wohlbefinden