An Investigation of the Effects of Three Factors on Response to Mail Questionnaires

摘要: While conducting a survey of former Fulbright and Smith-Mundt grantees,' we investigated the effects three factors on questionnaire response frequencies: class mailing (half questionnaires were sent by first-class mail, half third-class mail); color printed green paper, white); type postage return envelope envelopes business reply, had stamps pasted them). Using 2 factorial design, randomly divided our sample into eight treatment groups, each which received different combination levels factors.