This systematic review presents the current state of research investigating the implicit self-concept of personality. First, we present results on meta-analyses estimating internal consistency, reliability coefficients, the implicit-explicit consistency and the single association predictive effect of implicit self-concept of personality measures. To do this, studies were aggregated over personality domains. Second, for each of the Five Factor personality domains, different aspects of construct validity and predictive validity are reviewed in a narrative way. Results show that implicit self-concept of personality measures are reliable, and there is evidence for the construct and predictive validity of these implicit measures, especially in the extraversion and agreeableness domains of personality. However, it must be kept in mind that clear evidence for publication bias was found for studies examining the single association predictive pattern. Finally, this systematic review identifies some achievable improvements that are needed in future research. Large cross-lab efforts are important in this respect. Moreover, the implicit self-concept of personality field must move from an 'ad hoc' to a 'validation' approach in developing new indirect measurement tasks. By adopting these research objectives, the information processing account of personality will increase its potential to become integrated into mainstream personality theory and research. Copyright © 2017 European Association of Personality Psychology Key words: systematic review; meta-analysis; self-concept; personality; implicit measures Human beings consider it important to gain insight into their person(ality). Unfortunately, research has demonstrated that we can have blind spots with respect to the behavioural manifestations of our selves (e.g. Hofmann, Gschwendner, & Schmitt, 2009;Hofmann & Wilson, 2010;Wilson, 2002;Wilson & Dunn, 2004). According to psychoanalytic tradition, humans lack self-knowledge because they are motivated to keep unpleasant and anxious thoughts/feelings outside awareness. The more contemporary view on the failure of self-knowledge holds that much of the information that people capture with their senses is processed outside awareness, simply because the amount of information is too large to be consciously processed. Several mental functions operate outside conscious awareness, including aspects of learning, attention, interpretation, emotions and goal-setting (Hofmann & Wilson, 2010;Wilson, 2002). Wilson (Wilson, 2002;Wilson & Dunn, 2004) calls these non-conscious processes the 'adaptive unconscious', as they are vital for daily functioning. Several mental functions that are largely processed in the adaptive unconscious are part of-and are combined in-the construct of personality.In personality psychology research, direct self-report measures are the standard measurement tasks for assessing individual differences in personality. People are directly asked about characteristics of their personality, based on introspection. T...