Table 1 Inclusion and exclusion criteria

Minimal age of 18 years

Suffering from Schizophrenia, bipolar disorder, or alcohol and/or substance dependence disorder

Meeting the DSM-IV diagnostic criteria for ED

High risk of suicide

Ability to understand and read Spanish

Medical disease/condition that prevents the participant from carrying out the psychological treatment

Access to Internet at home and having an email address

Receiving another psychological treatment during the study

Providing online informed consent

An increase and/or change in the pharmacological treatment (in the case of receiving) during the study period