<qa>  What is the name of the type of treatment that is required to be proficient in?In line with the PICO model, patient selection and procedures for experimental and control treatments and outcome measures are rigorously defined. Inpatients, aged 18-85, diagnosed with major depressive disorder MDD, according to DSM-IV, that have been offered and have accepted ECT, are eligible to participate. Patients must be proficient in spoken and written Swedish, and score 20 points on the Montgomery Åsberg Depression Rating Scale MADRS. Exclusion criteria are known allergy to the active substance; co-morbid conditions that could interfere with the treatment e.g. primary psychosis; habitual difficulties to speak, hear, remember or reason; on-going or recent 6 months drug abuse; treatment according to LPT Lagen om psykiatrisk tvångsvård; Compulsory Psychiatric Care Act; and a number of cardiovascular conditions. 