Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) Murakami Koshi,Are quicker replies better? A verification of the “reciprocity hypothesis” in mobile e-mail messages and LINE,THE JAPANESE JOURNAL OF EXPERIMENTAL SOCIAL PSYCHOLOGY,0387-7973,The Japanese Group Dynamics Association,2023,62,2,80-93,https://cir.nii.ac.jp/crid/1390577376040802432,https://doi.org/10.2130/jjesp.2114