........................................................................................................................................... 4 INTRODUCTION ................................................................................................................................ 5 RESEARCH QUESTIONS .................................................................................................................. 11 BACKGROUND ................................................................................................................................... 12 LEGISLATIVE HISTORY ......................................................................................................................... 12 DECISION MAKING BIASES ................................................................................................................... 14 FACTORS INFLUENCING VACCINE DECISIONS .................................................................................... 15 THEORETICAL FRAMEWORK ................................................................................................................ 17 HYPOTHESIS AND OBSERVABLE IMPLICATIONS ................................................................... 21 METHODS .......................................................................................................................................... 22 SURVEY PROCEDURES ........................................................................................................................... 23 SURVEY CONTENT ................................................................................................................................ 23 PRIMARY DATA ANALYSIS ..................................................................................................................... 25 SECONDARY ANALYSIS .......................................................................................................................... 27 DATA .................................................................................................................................................... 32 DISCUSSION ....................................................................................................................................... 41 LIMITATIONS .................................................................................................................................... 46 REFERENCES .................................................................................................................................... 47