Web surveys have several important characteristics that affect their ability to collect accurate survey data discussing these in detail the authors address basic design decisions from input widgets to background colors they additionally focus on the visual character of web surveys on their ability to automatically interact with respondents and on the web as a method of self administration . Because web surveys are often used in combination with more traditional modes of data collection the book also provides a model of the errors arising from mixed mode surveys in its discussion of sampling and coverage the book assesses the effectiveness of statistical procedures designed to remove selection and coverage biases from web survey estimates several chapters are devoted to the . The science of web surveys roger tourangeau frederick g conrad and mick p couper provides a comprehensive resource for the design of web surveys presents a thorough review of methods for adjusting web survey estimates of studies on grids definitions in surveys and of mode experiments presents a new model for mode effects. The science of web surveys by tourangeau conrad and couper is a summary of state of the art methodological research on surveys using the web mode of data collection it mainly addresses academic researchers but the book can also be rec ommended for survey practitioners conducting web surveys unlike other publica