Background: Studies from multiple contexts conceptualize organized crime as comprising different types of criminal organizations and activities. Notwithstanding growing scientific interest and increasing number of policies aiming at preventing and punishing organized crime, little is known about the specific processes that lead to recruitment into organized crime.Objectives: This systematic review aimed at (1) summarizing the empirical evidence from quantitative, mixed methods, and qualitative studies on the individual-level risk factors associated with the recruitment into organized crime, (2) assessing the relative strength of the risk factors from quantitative studies across different factor categories and subcategories and types of organized crime.
Methods:We searched published and unpublished literature across 12 databases with no constraints as to date or geographic scope. The last search was conducted between September and October 2019. Eligible studies had to be written in English, Spanish, Italian, French, and German.Selection Criteria: Studies were eligible for the review if they:• Reported on organized criminal groups as defined in this review.• Investigated recruitment into organized crime as one of its main objectives.• Provided quantitative, qualitative, or mixed methods empirical analyses.• Discussed sufficiently well-defined factors leading to recruitment into organized crime.• Addressed factors at individual level.• For quantitative or mixed-method studies, the study design allowed to capture variability between organized crime members and non-members.Data Collection and Analysis: From 51,564 initial records, 86 documents were retained. Reference searches and experts' contributions added 116 additional documents, totaling 202 studies submitted to full-text screening. Fifty-two quantitative, qualitative,