去杠杆策略、风险感知与审计质量

基于高质量发展和供给侧结构性改革的制度背景，以2007—2019年非金融上市公司为样本，构建企业去杠杆策略的度量指标，实证检验企业去杠杆策略对审计质量的影响。研究发现，相比于“增权”策略，采用“减债”策略去杠杆的企业被出具非标准审计意见的概率增加，审计质量提高。进一步分析显示：上述现象在企业聘用的会计师事务所规模越大的情形下加强；在市场化程度越高以及分析师关注度越高的情形下得到缓解；企业的去杠杆策略通过经营风险、财务风险和信息披露风险三条途径影响审计质量。最后，进行敏感性测试和内生性检验，上述结论依然稳健。研究为推动政府部门化解企业高杠杆率、审计师警惕“减债”策略去杠杆企业的审计风险、企业管理者制定去杠杆策略提供了政策支持和理论依据。     

An assessment of the liberalization and the evolution of competition in the Moroccan mobile market

This paper analyses the liberalization process of the Moroccan mobile market since the beginning of the 21 st century. Our database ranges from 2004 to the end of 2020. First, operators’ market shares are presented and analysed. Second, we build concentration indexes and other indicators of competitiveness. Finally, we conduct an econometric analysis to determine the extent to which regulatory measures, privatization, market structure and the population dimension determine market shares. Overall, we can argue that, although concentration remains high, the market has become more competitive since the liberalization process began. The statistical analysis and the econometric assessment show that the entrance of the third operator made the market more competitive. Indeed, there is evidence that operator companies competed to capture customers from each other during the period under study. These features suggest that mobile operators did not follow anticompetitive practices in order to restrain competition.