أرسل هذا في رسالة قصيرة: The Effect of Time Commitment to Productive Activity on Subjective well-being among Young-Old Adults: Evidences from paid caregivers and volunteers of Home Care for Elderly in Shanghai

 __   __   _    _               ______   _____    
 \ \\/ // | || | ||   ____     /_   _// |  __ \\  
  \   //  | || | ||  |    \\    -| ||-  | |  \ || 
  / . \\  | \\_/ ||  | [] ||    _| ||_  | |__/ || 
 /_//\_\\  \____//   |  __//   /_____// |_____//  
 `-`  --`   `---`    |_|`-`    `-----`   -----`   
                     `-`