In the first test, the author finds that ‘both abnormal [stock market] price and [trading]
volume reactions to earnings announcements are significantly higher for non-announcing
firms using the same standards in comparison to non-announcing firms using different
standards.’ She also finds that ‘the greater information transfer effect from using the same
accounting standards is [statistically] significant only for announcing firms domiciled in
countries with stricter enforcement regimes and stronger reporting incentives.’