The ITA Model combines outpatient intervention (mainly psychotherapy), day hospital care and hospitalization as a function of patients' characteristics. Case conceptualization of the psychological processes of patients is formulated and revised within a team including psychologists, psychotherapists, psychiatrists, nutritionists, physicians, nurses, and social workers. The major emphasis of the ITA model is on psychological interventions which include individual psychotherapy, family therapy and/or guidance, and group therapy of various formats and contents (e.g., drug abuse, mindfulness, emotion work) tailored to the needs of each patient. However, when required, drugs are prescribed adjusting type of medication and dosage to the need of the patient.

CORE-OM is a 34-item self-report questionnaire for the assessment of subjective well-being, symptoms or problems, life functioning, and risk. It has good psychometric properties and it has been validated for the Spanish population. Its transdiagnostic nature makes it suitable for all kinds of eating disorders especially if we take into account the frequent comorbidities with other mental disorders (e.g., depression, anxiety) of these patients. Short forms of this questionnaire (versions A and B) are used to monitor patients' progress.

The EAT (children and adult versions) is a 26-item standardized self-report questionnaire devised to measure symptoms and concerns characteristic of eating disorders. Although the EAT has been used as a screening tool, here it is used to gauge symptom severity. It has good psychometric properties and it has been validated for the Spanish population.

BITE is a 33-item standardized self-report questionnaire measuring eating disorders symptoms and severity. It is especially suited for binge eating disorders and bulimia nervosa. The test is well sensitive to measure the effectiveness of the therapy and the changes of symptoms. It has good psychometric properties and it has been validated for the Spanish population.