臺大管理論叢 NTU Management Review VOL.29 NO.1

Earnings Informativeness of Long-Lived Assets Impairment Recognized and Reversals 234 Table 8 Results of Assets Impairment Recognized and Reversals in Earnings Informativeness---Tiny Magnitude of Impairment Loss Examination R t = β 0 + β 1 X t-1 + β 2 X t + β 3 X t3 + β 4 R t3 + β 5 IM t + β 6 IM t *X t-1 + β 7 IM t *X t + β 8 IM t *X t3 + β 9 IM t *R t3 + β 10 LEV t + β 11 MB t + β 12 SIZE t + ε t R t = β 0 + β 1 X t-1 + β 2 X t + β 3 X t3 + β 4 R t3 + β 5 IM t + β 6 IM t *X t-1 + β 7 IM t *X t + β 8 IM t *X t3 + β 9 IM t *R t3 + β 10 REV t + β 11 REV t *IM t *X t-1 + β 12 REV t *IM t *X t + β 13 REV t *IM t *X t3 + β 14 REV t *IM t *R t3 + β 15 LEV t + β 16 MB t + β 17 SIZE t + ε t Model IM model REV model Variables β β ( t -value) β ( t -value) Constant β 0 -1.283 b (-2.47) -1.278 b (-2.48) X t-1 β 1 -0.844 a (-7.58) -0.841 a (-7.35) X t β 2 1.386 a (8.45) 1.383 a (8.36) X t3 β 3 0.387 a (6.21) 0.387 a (6.14) R t3 β 4 -0.119 b (-2.36) -0.118 b (-2.34) IM t β 5 -0.640 (-0.71) -0.458 (-0.46) IM t *X t-1 β 6 7.374 b (2.28) 7.945 a (3.06) IM t *X t β 7 -10.040 a (-5.07) -10.589 a (-5.50) IM t *X t3 β 8 2.051 b (2.26) 2.084 a (2.58) IM t *R t3 β 9 -0.186 (-0.19) -0.381 (-0.30) REV t ---/β 10 0.035 (0.91) REV t *IM t *X t-1 ---/β 11 -15.741 (-0.55) REV t *IM t *X t ---/β 12 21.404 (1.14) REV t *IM t *X t3 ---/β 13 -3.687 (-0.38) REV t *IM t *R t3 ---/β 14 0.401 (0.40) LEV t β 10 /β 15 -0.499 b (-2.13) -0.497 b (-2.13)