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 __   _    _    _      _____   __   __    ______  
| || | || | || | ||   / ___//  \ \\/ //  /_   _// 
| '--' || | || | ||   \___ \\   \ ` //   `-| |,-  
| .--. || | \\_/ ||   /    //    | ||      | ||   
|_|| |_||  \____//   /____//     |_||      |_||   
`-`  `-`    `---`   `-----`      `-`'      `-`'

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發送短信 : To thank or not to thank: Understanding the differences between gratitude and indebtedness after receiving a favor through emotion appraisals, motivations and behaviors