Does the Beauty Premium Effect Exist: Empirical Evidence from Executive's Excess Compensation
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摘要: 以2009年~2016年中国创业板上市公司为研究对象, 实证检验高管超额薪酬是否存在美貌溢价效应, 研究发现美貌溢价效应确实存在, 当总经理容貌好于董事长时, 高管容貌垂直对对高管超额薪酬的美貌溢价起到负向调节作用, 相反则不显著。进一步按照董事长容貌进行分组, 研究证实高管容貌垂直对对总经理超额薪酬美貌溢价效应的调节作用存在着差异性, 并发现私有企业、传统行业以及东中西部地区均存在着显著的高管超额薪酬美貌溢价效应。本文的研究结论为高管超额薪酬研究提供了一个有趣的研究视角。Abstract: Taking the listed companies on the GEM of China from 2009 to 2016 as the research object, this paper empirically tests whether there is a beauty premium effect in the excess compensation of executives. The results indicates that there is a beauty premium effect in executive's excess compensation; when the general manager's appearance superior to that of the chairman, vertical executive's appearance has a negative moderating effect on the beauty premium of executive's excess compensation, on the contrary, it is not significant. This paper also validates the differences in the regulatory effect of the executive's vertical pair of appearance on chairperson's beauty premium effect according to the chairperson's appearance grouping, and there exists significant beauty premium effect of the executive's excess compensation in different enterprises, industries and regions. The findings provide an interesting perspective for the future research on executive's excess compensation.
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表 1 变量定义
变量符号 变量名称 变量说明 EXCOMP 总经理超额薪酬 总经理薪酬总额的对数减去总经理期望薪酬 FS 总经理容貌 总经理面部得分 DV 高管容貌垂直对 董事长面部得分减总经理面部得分的值 AQI 环境空气质量 综合考虑SO2、NO2、PM10、PM2.5、CO、O3等六项污染物的污染程度,环境空气质量综合指数数值越大表明综合污染程度越重。 SEXCOMP 总经理超额薪酬替代变量 总经理超额薪酬与前三名高管薪酬总额对数的比值 ROE 净资产收益率 净利润与净资产之比 SIZE 公司规模 年初总资产账面值之自然对数 NPR 企业性质 1为国有企业,0为私有企业 IOS 总资产增长率 企业年末总资产的增长额同年初资产总额之比 ZONE 区域 1为东部地区,0为中西部地区 Boardsize 董事会规模 董事总人数 MB 企业成长性 公司净资产市值与账面价值比,即市账比 YEAR 年度 年度虚拟变量 IND 行业分类 国泰安数据库证监会行业分类2012年版 表 2 各变量描述性统计
变量 N 均值 标准差 最小值 中位数 最大值 EXCOMP 415 0.410 0.350 0 0.340 2.200 FS 415 45.33 10.36 19 46 76 DV 415 -1.180 13.75 -37 -2 31 SEXCOMP 415 0.030 0.020 0 0.020 0.130 ROE 415 0.070 0.190 -3.240 0.080 0.280 SIZE 415 21.10 0.750 19.53 20.96 23.89 NPR 415 0.080 0.280 0 0 1 IOS 415 0.550 0.990 -0.440 0.170 10.74 ZONE 415 0.830 0.380 0 1 1 Boardsize 415 8.200 1.470 5 9 14 MB 415 4.060 2.870 0.740 3.340 19.30 YEAR 415 2013 1.980 2009 2014 2016 IND 415 2.080 2.340 1 1 13 表 3 Pearson相关性系数表
表 4 总经理容貌与其超额薪酬关系及高管容貌垂直对调节作用的回归结果
解释变量 被解释变量:EXCOMP (1) (2) (3) (4) (5) (6) (7) 全样本 DV>0 DV < 0 DV>0 DV>0 DV < 0 DV < 0 FS 0.005*** 0.013*** 0.007** 0.112*** 0.117*** 0.050* 0.066** (2.79) (3.43) (2.20) (3.51) (3.68) (1.74) (2.22) DV 0.027 0.032 -0.021 -0.019 (0.80) (0.94) (-0.68) (-0.60) FS×DV 0.044 -0.059* (1.37) (-1.87) ROE 0.005 0.261 -0.039 0.255 0.258 -0.048 -0.066 (0.06) (1.26) (-0.40) (1.23) (1.24) (-0.48) (-0.65) SIZE 0.101*** 0.138*** 0.132*** 0.136*** 0.127** 0.136*** 0.136*** (3.40) (2.85) (3.06) (2.81) (2.59) (3.12) (3.14) NPR 0.027 0.073 -0.027 0.044 0.031 -0.018 -0.012 (0.41) (0.86) (-0.20) (0.47) (0.33) (-0.14) (-0.09) IOS -0.016 -0.031 -0.003 -0.030 -0.030 -0.003 -0.004 (-0.84) (-0.95) (-0.11) (-0.89) (-0.89) (-0.12) (-0.16) ZONE 0.123** 0.160** 0.087 0.143* 0.136* 0.086 0.102 (2.54) (2.14) (1.26) (1.84) (1.75) (1.25) (1.48) Boardsize 0.003 -0.011 0.021 -0.010 -0.006 0.021 0.023 (0.25) (-0.55) (1.22) (-0.50) (-0.31) (1.23) (1.33) MB 0.022*** 0.043*** 0.007 0.043*** 0.042*** 0.008 0.009 (2.86) (3.15) (0.70) (3.10) (3.04) (0.81) (0.93) YEAR 控制 控制 控制 控制 控制 控制 控制 IND 控制 控制 控制 控制 控制 控制 控制 Constant -1.547** -2.306** -3.151*** -2.259** -1.426 -2.906*** -2.943*** (-2.14) (-2.12) (-3.11) (-2.22) (-1.29) (-2.87) (-2.93) Observations 415 179 231 179 179 231 231 Prob>F 0.000 2 0.002 0.008 0.003 0.002 0.011 0.006 Adj.R2 0.082 0.135 0.087 0.133 0.138 0.085 0.096 说明:*p < 0.1、**p < 0.05、***p < 0.01,括号内为T值。下表同。 表 5 2SLS回归结果
被解释变量 FS EXCOMP 解释变量 第一阶段 第二阶段 AQI -0.077***(-3.48) FS 0.014*(1.65) ROE 12.111(1.04) 1.035**(2.40) SIZE 1.097(1.05) 0.031(0.80) NPR -8.578***(-5.70) 0.149(1.44) IOS 2.559(1.64) -0.023(-0.44) ZONE 1.859(1.16) 0.085*(1.96) MB 0.170(0.55) -0.0001(-0.02) YEAR 控制 控制 IND 控制 控制 Constant 41.382*(1.76) -1.611**(-1.97) Observations 278 278 Prob>F 0.000 0 0.000 0 R-squared 0.293 0.078 表 6 稳健性检验
解释变量 被解释变量:SEXCOMP (1) (2) (3) (4) (5) (6) (7) 全样本 DV>0 DV < 0 DV>0 DV>0 DV < 0 DV < 0 FS 0.005*** 0.013*** 0.007** 0.112*** 0.117*** 0.050* 0.067** (2.79) (3.43) (2.20) (3.51) (3.68) (1.74) (2.24) DV 0.027 0.032 -0.021 -0.018 (0.80) (0.94) (-0.68) (-0.59) FS×DV 0.044 -0.0603* (1.37) (-1.91) ROE 0.005 0.261 -0.039 0.255 0.258 -0.048 -0.066 (0.06) (1.26) (-0.40) (1.23) (1.24) (-0.48) (-0.66) SIZE 0.101*** 0.138*** 0.132*** 0.136*** 0.127** 0.136*** 0.136*** (3.40) (2.85) (3.06) (2.81) (2.59) (3.12) (3.14) NPR 0.027 0.073 -0.027 0.044 0.031 -0.018 -0.012 (0.41) (0.86) (-0.20) (0.47) (0.33) (-0.14) (-0.09) IOS -0.016 -0.031 -0.003 -0.030 -0.030 -0.003 -0.004 (-0.84) (-0.95) (-0.11) (-0.89) (-0.89) (-0.12) (-0.16) ZONE 0.123** 0.160** 0.087 0.143* 0.136* 0.086 0.103 (2.54) (2.14) (1.26) (1.84) (1.75) (1.25) (1.48) Boardsize 0.003 -0.011 0.021 -0.010 -0.006 0.021 0.023 (0.25) (-0.55) (1.22) (-0.50) (-0.31) (1.23) (1.34) MB 0.022*** 0.043*** 0.007 0.043*** 0.042*** 0.008 0.009 (2.86) (3.15) (0.70) (3.10) (3.04) (0.81) (0.94) YEAR 控制 控制 控制 控制 控制 控制 控制 IND 控制 控制 控制 控制 控制 控制 控制 Constant -1.547** -2.306** -3.151*** -2.259** -1.426 -2.906*** -2.943*** (-2.14) (-2.12) (-3.11) (-2.22) (-1.29) (-2.87) (-2.93) Observations 415 179 231 179 179 231 231 Prob>F 0.000 2 0.002 0.008 0.003 0.002 0.002 0.011 Adj.R2 0.082 0.135 0.087 0.133 0.138 0.138 0.085 表 7 按董事长容貌分组的高管容貌垂直对调节作用
解释变量 被解释变量:EXCOMP QS≤25% 25% < QS≤50% 50%≤QS < 75% QS≥75% FS 0.041 -0.265** 0.112*** 0.117*** 0.112*** 0.117*** 1.402*** 0.689* (0.31) (-2.20) (3.51) (3.68) (3.51) (3.68) (3.27) (2.00) DV 0.061 -0.485*** 0.027 0.032 0.027 0.032 0.878*** -0.030 (0.55) (-3.37) (0.80) (0.94) (0.80) (0.94) (3.19) (-0.11) FS×DV -0.502*** 0.044 0.044 0.572*** (-4.67) (1.37) (1.37) (4.75) ROE -0.405 -2.124 0.255 0.258 0.255 0.258 1.252* 0.146 (-0.23) (-1.57) (1.23) (1.24) (1.23) (1.24) (1.83) (0.27) SIZE 0.186 0.248*** 0.136*** 0.127** 0.136*** 0.127** 0.035 0.097 (1.63) (2.85) (2.81) (2.59) (2.81) (2.59) (0.25) (0.96) NPR -0.143 -0.187 0.044 0.031 0.044 0.031 2.154*** 2.047*** (-0.76) (-1.32) (0.47) (0.33) (0.47) (0.33) (3.32) (4.34) IOS -0.190** -0.080 -0.030 -0.030 -0.030 -0.030 0.149 0.044 (-2.19) (-1.16) (-0.89) (-0.89) (-0.89) (-0.89) (1.47) (0.57) ZONE 0.186 0.149 0.143* 0.136* 0.143* 0.136* 0.415 0.744*** (1.25) (1.33) (1.84) (1.75) (1.84) (1.75) (1.58) (3.67) Boardsize -0.036 0.016 -0.010 -0.006 -0.010 -0.006 -0.155** -0.212*** (-0.90) (0.49) (-0.50) (-0.31) (-0.50) (-0.31) (-2.14) (-3.93) MB 0.057 0.073** 0.043*** 0.042*** 0.043*** 0.042*** 0.145** 0.055 (1.48) (2.52) (3.10) (3.04) (3.10) (3.04) (2.61) (1.23) YEAR 控制 控制 控制 控制 控制 控制 控制 控制 IND 控制 控制 控制 控制 控制 控制 控制 控制 Constant -1.942 -4.768** -2.259** -1.426 -2.259** -1.426 -2.689 -3.719 (-0.87) (-2.68) (-2.22) (-1.29) (-2.22) (-1.29) (-0.89) (-1.67) Observations 46 46 179 179 179 179 43 43 Prob>F 0.527 0.009 0.003 0.002 0.003 0.002 0.017 0.0001 Adj.R2 -0.017 0.425 0.133 0.138 0.133 0.138 0.399 0.684 表 8 不同企业性质、行业、地区回归结果
解释变量 被解释变量:EXCOMP 国有 私有 高科技 传统 东部 中西部 FS 0.005 0.005** 0.004 0.004* 0.004* 0.011*** (0.46) (2.42) (1.45) (1.87) (1.93) (2.72) ROE 3.128** -0.008 -0.015 0.287 -0.021 0.736 (2.68) (-0.09) (-0.19) (1.36) (-0.21) (0.94) SIZE -0.112 0.097*** -0.086* 0.123*** 0.123*** -0.005 (-0.75) (3.13) (-1.81) (3.35) (3.67) (-0.08) NPR 0.154 -0.041 0.008 0.107 (0.83) (-0.57) (0.10) (1.22) IOS 0.106 -0.023 -0.019 -0.019 -0.013 -0.046 (1.26) (-1.10) (-0.75) (-0.73) (-0.58) (-0.84) ZONE -0.028 0.136** 0.092 0.086 (-0.17) (2.58) (0.76) (1.56) Boardsize 0.104** -0.003 -0.004 0.025 0.004 -0.006 (2.12) (-0.24) (-0.21) (1.56) (0.24) (-0.27) MB -0.015 0.022*** -0.011 0.031*** 0.027*** -0.005 (-0.27) (2.74) (-1.00) (2.63) (2.85) (-0.34) YEAR 控制 控制 控制 控制 控制 控制 IND 控制 控制 控制 控制 Constant 1.699 -2.469*** 1.773* -2.655*** -3.018*** 0.154 (0.61) (-3.24) (1.86) (-3.49) (-3.63) (0.11) Observations 35 380 115 300 344 71 Prob>F 0.114 0.000 3 0.407 0.000 0.005 0.106 Adj.R2 0.275 0.083 0.007 0.111 0.062 0.140 -
[1] HAMERMESH D S. Beauty pays: why attractive people are more successful[M]. Princeton: Princeton University Press, 2011: 224. [2] QUINN R E. Productivity and the process of organization improvement: why we cannot talk to each other[J]. Public Administration Review, 1978, 38(1): 41-45. doi: 10.2307/975409 [3] HAMERMESH D S, BIDDLE J E. Beauty and the labor market[J]. American Economic Review, 1994, 84(5): 1174-1194. [4] ROSZELL P, KENNEDY D, GRABB E, et al. Physical attractiveness and income attainment among Canadians[J]. The Journal of Psychology, 1989, 123(6): 547-559. doi: 10.1080/00223980.1989.10543009 [5] HARPER B. Beauty, stature and the labor market: a British cohort study[J]. Oxford Bulletin of Economics & Statistics, 2000, 62(s1): 771-800. [6] 胡援成, 刘元秀, 吴飞, 等.高管薪酬、业绩与胜任力识别:一项行为金融实验——来自我国2012年沪深两市的经验证据[J].经济学(季刊), 2017(3): 969-996. https://www.cnki.com.cn/Article/CJFDTOTAL-JJXU201703007.htm [7] 权小锋, 吴世农, 文芳.管理层权力、私有收益与薪酬操纵[J].经济研究, 2010(11): 73-87. https://www.cnki.com.cn/Article/CJFDTOTAL-JJYJ201011009.htm [8] 杨青, 陈峰, 龚懿婷.外部冲击视角下的CEO薪酬研究:个体揩油还是集体辩护[J].广东财经大学学报, 2018(1): 99-112. https://www.cnki.com.cn/Article/CJFDTOTAL-SONG201801009.htm [9] 罗宏, 黄敏, 周大伟, 等.政府补助、超额薪酬与薪酬辩护[J].会计研究, 2014(1): 42-48. doi: 10.3969/j.issn.1003-2886.2014.01.007 [10] BEBCHUK L A, FRIED J M, WALKER D I, et al. Managerial power and rent extraction in the design of executive compensation[J]. University of Chicago Law Review, 2002, 69(3): 751-846. doi: 10.2307/1600632 [11] 吕长江, 赵宇恒.国有企业管理者激励效应研究——基于管理者权力的解释[J].管理世界, 2008(11): 99-109. https://www.cnki.com.cn/Article/CJFDTOTAL-GLSJ200811014.htm [12] CORE J E, HOLTHAUSEN R W, LARCKER D F, et al. Corporate governance, chief executive officer compensation, and firm performance[J]. Journal of Financial Economics, 1999, 51(3): 371-406. doi: 10.1016/S0304-405X(98)00058-0 [13] CHALMERS K, KOH P, STAPLEDON G P, et al. The determinants of CEO compensation: rent extraction or labour demand?[J]. British Accounting Review, 2006, 38(3): 259-275. doi: 10.1016/j.bar.2006.01.003 [14] CORE J E, GUAY W, LARCKER D F. The power of the pen and executive compensation[J]. Journal of Financial Economics, 2008, 88(1): 1-25. doi: 10.1016/j.jfineco.2007.05.001 [15] DOW J, RAPOSO C C. CEO Compensation, change, and corporate strategy[J]. Journal of Finance, 2010, 60(6): 2701-2727. doi: 10.1111/j.1540-6261.2005.00814.x [16] 罗建兵, 邓德胜.企业激励和政府规制下的高管薪酬研究[J].技术经济与管理研究, 2015(1): 45-49. doi: 10.3969/j.issn.1004-292X.2015.01.010 [17] 刘西友, 韩金红.上市公司薪酬委员会有效性与高管薪酬研究——基于"有效契约论"与"管理权力论"的比较分析[J].投资研究, 2012(6): 16-28. https://www.cnki.com.cn/Article/CJFDTOTAL-TZYJ201206004.htm [18] 陆智强, 李红玉.经理超额薪酬:权力腐败抑或人力资本溢价[J].统计与决策, 2012(17): 182-185. https://www.cnki.com.cn/Article/CJFDTOTAL-TJJC201217055.htm [19] 谢德仁, 林乐, 陈运森.薪酬委员会独立性与更高的经理人报酬-业绩敏感度——基于薪酬辩护假说的分析和检验[J].管理世界, 2012(1): 121-140. https://www.cnki.com.cn/Article/CJFDTOTAL-GLSJ201201013.htm [20] 沈小燕, 王跃堂.薪酬委员会设立、产权性质与高管薪酬[J].北京工商大学学报:社会科学版, 2015(5): 53-65. https://www.cnki.com.cn/Article/CJFDTOTAL-BJSB201505007.htm [21] PERSICO N, POSTLEWAITE A, SILVERMAN D, et al. The effect of adolescent experience on labor market outcomes: the case of height[J]. Journal of Political Economy, 2004, 112(5): 1019-1053. doi: 10.1086/422566 [22] MOBIUS M M, ROSENBLAT T S. Why beauty matters[J]. American Economic Review, 2006, 96(1): 222-235. doi: 10.1257/000282806776157515 [23] 顾天竹, 纪月清.论社会资本中的美貌溢价——基于劳动力社会网络外貌差异的实证[J].经济与管理研究, 2017(9): 74-83. https://www.cnki.com.cn/Article/CJFDTOTAL-JJYG201709016.htm [24] LANGLOIS J H, KALAKANIS L, RUBENSTEIN A J, et al. Maxims or myths of beauty? a meta-analytic and theoretical review[J]. Psychological Bulletin, 2000, 126(3): 390-423. doi: 10.1037/0033-2909.126.3.390 [25] SCHOLZ J K, SICINSKI K. Facial attractiveness and lifetime earnings: evidence from a cohort study[J]. The Review of Economics and Statistics, 2015, 97(1): 14-28. doi: 10.1162/REST_a_00435 [26] 郭继强, 费舒澜, 林平.越漂亮, 收入越高吗?——兼论相貌与收入的"高跟鞋曲线"[J].经济学(季刊), 2017(1): 147-172. https://www.cnki.com.cn/Article/CJFDTOTAL-JJXU201701006.htm [27] 赵丙艳, 葛玉辉, 王辉. TMT垂直对差异对创新绩效的影响——创新氛围的中介作用和行为整合的调节作用[J].科技与经济, 2016(4): 1-5. https://www.cnki.com.cn/Article/CJFDTOTAL-KJYZ201604001.htm [28] TSUI A S, OREILLY C A. Beyond simple demographic effects: the importance of relational demography in superior-subordinate dyads[J]. Academy of Management Journal, 1989, 32(2): 402-423. http://workar.oxfordjournals.org/lookup/ijlink?linkType=ABST&journalCode=amj&resid=32/2/402&atom=%2Fworkar%2F1%2F3%2F243.atom [29] TSUI A S, PORTER L W, EGAN T D. When both similarities and dissimilarities matter: extending the concept of relational demography.[J]. Human Relations, 2002, 55(8): 899-929. doi: 10.1177/0018726702055008176 [30] RIORDAN C M. Relational demography within groups: past developments, contradictions, new directions[J]. Research in Personnel and Human Resources Management, 2001, 19: 131-173. http://www.emeraldinsight.com/books.htm?chapterid=1781295 [31] BUTZER B, KUIPER N A. Relationships between the frequency of social comparisons and self-concept clarity, intolerance of uncertainty, anxiety, and depression[J]. Personality & Individual Differences, 2006, 41(1): 167-176. http://www.sciencedirect.com/science/article/pii/S0191886906000559 [32] LARRICK R P, BURSON K A, SOLL J B. Social comparison and confidence: when thinking you're better than average predicts overconfidence(and when it does not)[J]. Organizational Behavior & Human Decision Processes, 2007, 102(1): 76-94. [33] VAN D Z K, BUUNK B, SANDERMAN R. Neuroticism and reactions to social comparison information among cancer patients[J]. Journal of Personality, 1998, 66(2): 175-194. doi: 10.1111/1467-6494.00008 [34] LEE S, PITESA M, PILLUTLA M, et al. When beauty helps and when it hurts: an organizational context model of attractiveness discrimination in selection decisions[J]. Organizational Behavior and Human Decision Processes, 2015, 128: 15-28. doi: 10.1016/j.obhdp.2015.02.003 [35] 沈艺峰, 王夫乐, 黄娟娟, 等.高管之"人"的先天特征在IPO市场中起作用吗?[J].管理世界, 2017(9): 141-154. doi: 10.3969/j.issn.1002-5502.2017.09.012 [36] 李娜, 孙文刚.管理者过度自信对内部控制效果影响的研究——基于2011—2014年面板数据的实证分析[J].会计之友, 2015(17): 77-80. doi: 10.3969/j.issn.1004-5937.2015.17.018 [37] 邢维全, 宋常.管理者过度自信、内部控制质量与会计稳健性——来自中国A股上市公司的经验证据[J].华东经济管理, 2015(10): 35-43. doi: 10.3969/j.issn.1007-5097.2015.10.006 [38] BEBCHUK L, FRIED J. Pay without performance: the unfulfilled promise of executive compensation[M]. Cambridge, MA: Harvard University Press, 2004. [39] EDWARD P LAZEAR, SHERWIN ROSEN. Rank-order tournaments as optimum labor contracts[J]. Social Science Electronic Publishing, 1981, 89(5): 841-864. http://www.emeraldinsight.com/servlet/linkout?suffix=b12&dbid=16&doi=10.1108%2F13581980810888831&key=10.1086%2F261010 [40] 欧阳文珍.嫉妒心理及其内隐性研究[J].心理科学, 2000(4): 446-449, 511. doi: 10.3969/j.issn.1671-6981.2000.04.014 [41] PAGANO M, RÖELL A. The choice of stock ownership structure: agency costs, monitoring, and the decision to go public[J]. Quarterly Journal of Economics, 1998, 113(1): 187-225. doi: 10.1162/003355398555568 [42] HALFORD J T, HSU S H C. Beauty is wealth: CEO appearance and shareholder value[J]. Social Science Electronic Publishing, 2015. http://www.researchgate.net/publication/272304921_Beauty_is_Wealth_CEO_Appearance_and_Shareholder_Value/download [43] KRAMER R S S, JONES A L, WARD R. A lack of sexual dimorphism in width-to-height ratio in white European faces using 2D photographs, 3D scans, and anthropometry[J]. PLOS ONE, 2012, 7. [44] GRAHAM J R, HARVEY C R, PURI M, et al. A corporate beauty contest[J]. Management Science, 2010, 63(9): 3044-3056. http://papers.ssrn.com/sol3/papers.cfm?abstract_id=1571469 [45] MITCHELL M T. Machine learning[M]. New York: Mc Graw-Hill, 1997. [46] 陆智强, 李红玉.经理权力、市场化进程与经理超额薪酬——基于不同产权性质的比较分析[J].经济经纬, 2014(3): 108-113. https://www.cnki.com.cn/Article/CJFDTOTAL-JJJW201403021.htm [47] 孙涵, 聂飞飞, 申俊, 等.空气污染、空间外溢与公共健康——以中国珠江三角洲9个城市为例[J].中国人口·资源与环境, 2017(9): 35-45. https://www.cnki.com.cn/Article/CJFDTOTAL-ZGRZ201709005.htm [48] 董阳.中国空气质量对公众健康的影响——基于与G20国家整体的比较[J].人口与经济, 2018(2): 57-68. https://www.cnki.com.cn/Article/CJFDTOTAL-RKJJ201802006.htm [49] 唐清泉, 夏芸, 徐欣.我国企业高管股权激励与研发投资——基于内生性视角的研究[J].中国会计评论, 2011(3): 21-42.