Earnings management refers to practices used by company managers to misrepresent financial performance or alter reported income. There are several motives for and techniques of earnings management, including income smoothing and using discretionary estimates to manipulate reported earnings. Earnings management can be done through accrual manipulation or real activities manipulation like reducing discretionary expenses or timing asset sales. While some studies find earnings management can positively impact short-term measures like stock price, most research shows it adversely affects long-term financial performance indicators like return on assets. Case studies on companies like GE and Samsung provide examples of earnings management techniques.