<P>Students and researchers who want to improve the quality of their mail-survey data collection will find this book invaluable. The author considers such issues as: reducing sampling bias; questioning response errors; and obtaining good response rates from mail surveys. The book also offers useful insights and tips on: problems to avoid in mail surveys; what type of rating scales to use; open-ended versus closed-ended questions; screening questions and skip instructions; question and response order effects; sampling strategies; and ways to reduce nonresponse errors - for example, by prenotification or incentives. </P>