This paper presents three datasets (.csv) providing raw data of three surveys about self-reported behavior, attitudes, and emotions regarding the COVID-19 pandemic. Data for Study 1 comes from a German sample, while data for Study 2 and Study X come from U.S. samples. For each survey, data was collected online through different survey software. The surveys contained items concerning self-reported ambivalence (two measures) regarding the COVID-19 pandemic and preventive measures to reduce the spread of the coronavirus, self-reported adherence to these preventive measures, and sociodemographic variables. Data can be used for re-analyses and exploratory purposes and comparisons between German and U.S. citizens in the domain of adherence, attitudes, and emotions.