Abstract
Psychologists have a long history of engaging in the intersection of human and technology and have contributed to the field of Human–Computer Interaction (HCI). This scoping review explores how psychological theories have been applied in HCI in European research during the last decade and identifies future research opportunities. As HCI is a multidisciplinary field that applies psychology, we explore how humans and human needs are understood in HCI. After searching for mentions of “psychological theory or psychological theories,” 119 articles were identified, and 29 articles were found eligible. The authors were from 13 European countries, Germany and the United Kingdom being the most frequent ones. The reviewed papers demonstrate how emerging technologies and interaction modalities broaden the need for integrating psychology into HCI. Self-determination theory (SDT) was the most frequently applied psychological theory, but many other theories were used, covering several important aspects of human behavior such as motivation, behavior change, emotion, mental health, and social interaction.

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