This paper investigates the threshold effects of business cycles on earnings quality for the period of 2005 to 2015. using Panel Smooth Transition Regression (PSTR) model as one of the most prominent regime-switching models. For this end. accruals quality and earnings smoothing are used as measures of earnings quality. https://www.ngetikin.com/mega-save-NHL-Calgary-Flames-Home-Jersey-iPhone-XR-Skin-p120897-hot-value/