Handwashing adherence during the COVID-19 pandemic: A longitudinal study based on protection motivation theory.

"appendix a supplementary data the following is the supplementary data to this article: multimedia component 1 multimedia component 1 data availability data related to this paper as well as original study materials outputs are available at https://osf io/vmn2q/ except data for germany malaysia and australia; based on decisions of the respective irbs. data availability data related to this paper as well as original study materials outputs are available at https://osf"

"Declaration of competing interest None."

"Funding source The study was supported by grant number 2020/01/0/HS6/00059 from the National Science Centre, Poland, awarded to Aleksandra Luszczynska (study design; collection; analysis and interpretation of data; writing of the article)."