Cognitive bias modification imagery (CBM-I)

Rationale: The proposed study investigates whether a Cognitive Bias Modification Imagery (CBM-I) intervention will change cognitive biases of patients with cluster-C personality disorders or personality disorder NOS in a more positive way. It is hypothesized that they will end up with having a more positive perspective on who they are, on others and the world around them.

Primary Objective:

• Is CBM-I successful in changing the cognitive bias in patients with cluster-C personality disorders or personality disorder NOS?



Secondary Objective(s):

• Will patients following CBM-I show a significant reduction in symptoms and personality problems?

• Can mental flexibility predict successfulness in changing cognitive bias in patients who have underwent the CBM-I?

Multiple baseline design
Primary outcome; daily measurements
Secondary outcome; 4 timepoints

After a variable baseline period subjects will receive CBM-I via a computer on a daily bases during 2 weeks. The main parameter within this research is the score on the daily measurements; the VAS-MCB and the PANAS. It is to be expected that patients with personality disorder benefit by following the computer task training. The scores are expected to be significantly lower on the VAS-MCB and the PANAS - after the intervention - in comparison to the control condition (baseline condition).