Self-awareness represents the capacity of becoming the object of one’s own attention. In this state one actively identifies, processes, and stores information about the self. This paper surveys the self-awareness  literature  by  emphasizing  definition  issues,  measurement  techniques,  effects  and  functions of self-attention, and antecedents of self-awareness. Key self-related concepts (e.g., minimal, reflective  consciousness)  are  distinguished  from  the  central  notion  of  self-awareness.  Reviewed measures include questionnaires, implicit tasks, and self-recognition. Main effects and functions of self-attention  consist  in  self-evaluation,  escape  from  the  self,  amplification  of  one’s  subjective experience,  increased  self-knowledge,  self-regulation,  and  inferences  about  others’  mental  states (Theory-of-Mind).  A  neurocognitive  and  socioecological  model  of  self-awareness  is  described  in which the role of face-to-face interactions, reflected appraisals, mirrors, media, inner speech, imagery, autobiographical knowledge, and neurological structures is underline