Controversy surrounds the role of early social experience in the development of personality disorder. In particular, little is known of the means by which continuities from infancy through adulthood might be mediated. One suggestion is that a person's mental representations of relations between him- or herself and other people, either in the form of “internal working models” or “internal object relations,” provide the essential link. We report on an investigation of this issue in which we focused on the formal qualities of accounts of childhood offered by adults who were drawn from two contrasting clinical groups; borderline personality disorder and dysthymia. The results lend support to the claims made by attachment theory and the object relations school of psychoanalysis, that at least in certain groups of individuals, adults' modes of representing early experience are intimately related to styles of interpersonal functioning. More specifically, the form of interpersonal Psychopathology characteristic of borderline personality disorder may be associated with enmeshed and unresolved patterns of responding to the Adult Attachment Interview of George, Kaplan, and Main (1985) and with reports of low maternal care and high maternal overprotection on the Parental Bonding Instrument of Parker, Tupling, and Brown (1979).

The principal aim of this study was to assess personal relatedness and attachment patterns in 12-month-old infants of mothers with borderline personality disorder~BPD!. We also evaluated maternal intrusive insensitivity toward the infants in semistructured play. We videotaped 10 mother-infant dyads with borderline mothers and 22 dyads where the mothers were free from psychopathology, in three different settings: a modification of Winnicott's Set Situation in which infants faced an initially unresponsive~"still-face"! stranger, who subsequently tried to engage the infant in a game of give and take; the Strange Situation of Ainsworth and Wittig; and a situation in which mothers were requested to teach their infants to play with miniature figures and a toy train. In relation to a set of a priori predictions, the results revealed significant group differences as follows:~a! compared with control infants, toward the stranger the infants of mothers with BPD showed lower levels of "availability for positive engagement," lower ratings of "behavior organization and mood state," and a lower proportion of interpersonally directed looks that were positive;~b! in the Strange Situation, a higher proportion~8 out of 10! of infants of borderline mothers were categorized as Disorganized; and~c! in play, mothers with BPD were rated as more "intrusively insensitive" toward their infants. The results are discussed in relation to hypotheses concerning the interpersonal relations of women with BPD, and possible implications for their infants' development.

The diagnosis of borderline personality disorder is associated with a particular pattern of mother-infant interaction. The infants' responses to the still-face challenge might suggest dysfunctional self-regulation, but the developmental significance remains to be assessed.