Kato, S, Kato, Y, Usuki, K (担当:分担執筆, 範囲:Associations between dependency on Line text messaging and occurrence of negative emotions in Line group chats)
Kato, Y, Kato, S, Chida, K (担当:分担執筆, 範囲:Reply timing as emotional strategy in mobile text communications of Japanese young people: focusing on perceptual gaps between senders and recipients)
Kato, Y, Kato, S, Chida, K (担当:分担執筆, 範囲:Reply timing and emotional strategy in mobile text communications of Japanese young people: replies to messages conveying four different emotions)
Scott, D. J, Coursaris, C. K, Kato, Y, Kato, S (担当:分担執筆, 範囲:The exchange of emotional context in business communications: a comparison of PC and mobile email users)
Kato, Y, Kato, S, Scott, D. J (担当:分担執筆, 範囲:Misinterpretation of Emotional Cues and Content in Japanese Email, Computer Conferences, and Mobile Text Messages)
Nova Science Publishers 2007年11月 (ISBN: 1600217729)