RT Article T1 The process toward (violent) extremism: an integrated theoretical model using a theory knitting approach JF Psychology, crime & law VO 29 IS 2 SP 182 OP 202 A1 De Pelecijn, Lana A2 Decoene, Stef A2 Hardyns, Wim LA English YR 2023 UL https://krimdok.uni-tuebingen.de/Record/1835033954 AB A key challenge within the (violent) extremism research field is building a comprehensive understanding of the process toward (violent) extremism. The lack of overarching models and the fact that explanatory models of (violent) extremism are often isolated/stand-alone, fuels disagreement on how to understand the phenomenon. The goal of this article is to build such an integrated theoretical model that addresses two knowledge gaps within the existing literature: ‘why’ and ‘how’ does an individual become sympathetic to and/or involved in (violent) extremism? Based on a scoping review of 1856 records, we selected ten models of (violent) extremism. These models were then analysed using the ‘theory knitting approach’, searching to identify the overlapping and non-overlapping aspects between the different models. By incorporating the common analysed features and unique contributions of the models, we developed an integrated theoretical model of (violent) extremism as a non-linear and dynamic process model combining an insider and outsider perspective on (violent) extremism. K1 insider and outsider perspective K1 integrated theoretical model K1 scoping review K1 theory knitting K1 (violent) extremism DO 10.1080/1068316X.2021.2018437