The purpose of this study was to investigate cognitive functioning in Borderline Personality Disorder subjects, with particular reference to the Working Memory functioning. The Working Memory seems to be relate to core features of the disturb. The final aim was to better understand the disorder and to implement a cognitive training to improve the deficits.

A literature search was conducted in April 2015. Pubmed and Scopus databases were used to find studies to include in the systematic review. The keywords used for the literature search were: “borderline personality disorder”, “borderline personality”, “working memory”, “executive functioning”. In each search, the keywords were used together with the logical operator “and”.

Three studies were included in this systematic review (Table 1). In each study, the working memory was investigated using N-back test. In two of those studies significantly differences were found between patients and healthy group in N-back task. In the third study, which used more tests to investigate working memory domain, no differences were found between the two groups.

Borderline personality disorder patients performed significantly worse on the N-back test compared to healthy controls and the impairment increased with increasing working memory load. In the third study the working memory domain was investigated using four different tests and single scores were not included therefore it was impossible to compare N-back data.

The authors have not supplied their declaration of competing interest.