Self-other disturbance, a phenomenon prevalent among individuals with Borderline Personality Disorder, refers to the fragile and unstable representations of self and others that are subject to rapid, intense, and polarized shifts. 

New York University

Other-oriented mentalizing refers to the mental activities involved in understanding and drawing inferences about other people's mental states. 

Other mentalizing / Other-oriented mentalizing

Self-oriented mentalizing refers to the mental activities involved in comprehending one's own feelings, motivations, intentions, thoughts, and other internal states.

Self mentalizing / Self-oriented mentalizing

Beeney, J. E., Hallquist, M. N., Ellison, W. D., & Levy, K. N. (2016). Self–other disturbance in borderline personality disorder: Neural, self-report, and performance-based evidence. Personality Disorders: Theory, Research, and Treatment, 7(1), 28.

Self–other Disturbance in Borderline Personality Disorder: Neural, Self-Report, and Performance-based Evidence (Beeney et al., 2016)

Self-Other Disturbance in Borderline Personality Disorder (BPD)

Self-other distinction impairments refer to difficulties in accurately distinguishing one's own mental states from those of others. In individuals with BPD, a lack of close connection between self-understanding and bodily experience, coupled with the projection of one's own experience onto others, contributes to elusive and unclear self-other boundaries.

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