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24th European Congress of Psychiatry / European Psychiatry 33S (2016) S116–S348

S251

in the systematic review. The keywords used for the literature

searchwere: “borderline personality disorder”, “borderline person-

ality”, “working memory”, “executive functioning”. In each search,

the keywords were used together with the logical operator “and”.

Summary

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 usedmore tests to investigateworkingmem-

ory domain, no differences were found between the two groups.

Conclusions

Borderline personality disorder patients performed

significantlyworse 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 investi-

gated using four different tests and single scores were not included

therefore it was impossible to compare N-back data.

Table 1

Disclosure of interest

The authors have not supplied their decla-

ration of competing interest.

http://dx.doi.org/10.1016/j.eurpsy.2016.01.509

EW392

Self-Concealment Scale: Validation of

two Portuguese versions

M. Costa , A.T. Pereira , M.J. Soares , J. Azevedo

, A. Macedo

Faculty of Medicine, University of Coimbra, Psychological Medicine,

Coimbra, Portugal

Corresponding author.

Introduction

Self-Concealment Scale (SCS) is composed of ten

items to measure self-concealment, defined as a tendency to

conceal from others personal information that one perceives as

distressing or negative (Larson and Chastain, 1990).

Objective

To investigate the psychometric properties of the SCS-

10 Portuguese version and of an adapted version containing two

additional items specifically focused on self-concealment related

do health problems (physical and psychological)–SCS-12.

Methods

The Portuguese version of the SCS-12 and other val-

idated questionnaires designed to evaluate self-reported health,

perfectionism and optimism-pessimism were administered to a

convenience sample of 555 adults from the community (60.5%

females; mean age = 43.49

±

10.565).

Results

The SCS-10 and SCS-12 Cronbach’s alphas were

˛

< 0.80.

In both versions, all the items contribute to the internal consistency.

The factor analysis, following the Kaiser and the Cattel’s Scree Plot

criteria, revealed that SCS-10 is unidimensional and that SCS-12

reliably and validly evaluates two dimensions: F1 Keeping secrets

(Explained variance = 48.60%;

˛

= 0.816), F2 Personal concealment

including health problems (9.65%;

˛

= 0.797). The pattern of cor-

relations of the SCS dimensional and total scores was as follow:

negative low correlations with physical health (@

0.20), negative

moderate correlations with psychological health (@–.30), moder-

ate correlations with self-oriented perfectionism, social-prescribed

perfectionism, pessimism (@0.25) and optimism (@

0.20).

Conclusions

The Portuguese versions of SCS have good reliabil-

ity and validity (construct and convergent-divergent). The factorial

structure partially overlaps with the original. SCS could be use-

ful for research proposes, namely in an ongoing project on the

role of the mentioned personality traits on illness and health

behavior.

Disclosure of interest

The authors have not supplied their decla-

ration of competing interest.

http://dx.doi.org/10.1016/j.eurpsy.2016.01.510

EW393

Perseverative negative thinking

prospectively mediates the

relationship between perfectionism

and psychological distress

P. Casimiro

1

, A.M. Pinto

2 , 3

, A.T. Pereira

2 ,

, V. Quaresma

1

,

M.J. Soares

2

, A.P. Amaral

4

, B. Maia

5

, M. Marques

2

, V. Nogueira

2

,

C. Roque

2

, N. Madeira

2

, M. Bajouco

2

, S. Morais

2

, A. Macedo

2

1

University of Coimbra, Faculty of Medicine, Coimbra, Portugal

2

Faculty of Medicine, University of Coimbra, Psychological Medicine,

Coimbra, Portugal

3

Faculty of Psychology and Educational Sciences, University of

Coimbra, CINEICC, Coimbra, Portugal

4

Institute Polytechnic of Coimbra, Coimbra Health School, ESTESC,

Coimbra, Portugal

5

The Catholic University of Portugal, Braga Regional Centre, Faculty

of Philosophy and Social Sciences, Coimbra, Portugal

Corresponding author.

Introduction

We have recently found that Perfectionism and Per-

severative Negative are both correlates of psychological distress/PD

and that PNT mediates the relationship between perfectionism and

PD (Macedo et al., 2015).

Objectives

To investigate if perfectionism and PNT are prospec-

tively associated to PD and if PNT is a longitudinal mediator

between perfectionism and PD, controlling for perceived stress and

gender.

Methods

A total of 227 university students (80.1% girls) filled

in the Portuguese validated versions of Perseverative Thinking

Questionnaire (PTQ), Multidimensional Perfectionism Cognitions

Inventory (MPCI), Profile of Mood States and Perceived Stress

Scale, with an additional item to evaluate perceived social sup-

port/PSS at T0 and after approximately one year (T1) (Mean

months = 12.77

±

1.137). Only variables significantly correlated

with the outcomes (Tension/Anxiety at T1 and Depression at T1)

were entered in the conditional process analysis. The moderat-

ing role of perceived support on the link between Concern over

Mistakes (MPCI) and psychological distress and between PTQ total

score and psychological distress (anxiety and depression sepa-

rately) was examined via conditional process analyses.

Results

The estimated models were significant (

F

= 4.257,

P

= .002;

F

= 6.476,

P

< .001) explaining 15.9% of tension-anxiety and

25.5% of depression variance. A significant conditional indirect

effect of PTQ total score on psychological distress at average and

higher levels of perceived support was found, in both models (anx-

iety and depression). On the contrary, the two models showed a