Psychological reactance is a psychological effect that can reduce the acceptance of devices and services. So far, there has not been a collection of potential causes for reactance in the context of human-computer interaction in literature. A literature review and a qualitative study to compile a list of possible causes of reactance in human-computer interaction were conducted. The final list includes twelve causes of reactance that have been shown to appear in the field of human-computer interaction. The individual causes are discussed and examples provided. Finally, strategies for avoiding reactance in human-computer interaction are proposed and possible future directions for reactance research in this field are recommended.