Self-object Differentiation Research Articles

Psychological factors in susceptibility to drug-induced extrapyramidal symptoms.

In an effort to identify nonneurobiologic factors in the susceptibility to neuroleptic-induced extrapyramidal symptoms (EPS), the EPS response in 20 patients was correlated with field dependence, self-object differentiation, and premorbid social competence. Only the last proved to be a good predictor, which suggests that psychosocial factors play a role in a patient's EPS response.

The Mutative Object: A Contribution to the Theory of Object Relationships

Four levels of object relationships preceding the achievement of object constancy are defined: biological unity between infant and mother; patterned activity, corresponding to autoerotism and including rocking, whirling, circular motions, by which the child tries to maintain a sense of familiarity and comfort; part-object representation, including imitative behavior, marking the emergence of self-object differentiation; and mutative-object representation, in which the child first makes a cognitive bridge between two part objects.

The Proprioceptive Body Image in Self-Object Differentiation: A Case of Congenital Indifference to Pain and Head-Banging

The Proprioceptive Body Image in Self-Object Differentiation: A Case of Congenital Indifference to Pain and Head-Banging