Introduction
Smileys and other emoticons as graphic representations of facial expressions are prevalent in everyday life. These visualizations are used frequently in private text messages, chats, and even business emails (e.g., Derks, Bos, & von Grumbkow, 2008; Krohn, 2004; Walther & D'Addario, 2001). Paralleling their increasing use in computer-mediated communication in everyday life, smileys and other emoticons also have been used more frequently in surveys. Recent studies have shown that visual design features and the use of numbers, symbols, and graphics can alter response behavior in web surveys (Christian, Dillman, & Smyth, 2007; Toepoel & Dillman, 2010; Tourangeau, Couper, &...