MADRID (Aug. 27) XINHUA - The number of people with psychological problems in the world has reached 1.5 billion, but only one percent of them have received treatment. The figures have just been released by the World Health Organization (WHO) Director General Hiroshi Nakajimi, at the 10th International Psychopathology Conference, which closed here today. Thousands of medical experts from countries all over the world attended the five-day conference. Nakajimi said the WHO held that the criterion for complete health should include not only physical health but also health in psychological and social aspects.

The WHO director general stressed that research on medicines for psychological diseases should get priority. Experts to the conference called for worldwide attention to dealing with psychological problems, adding that more than 80 percent of the diseases could be overcome if given adequate attention and treatment.

The psychological or mental problems, as defined by WHO, included agitation, volatility, unstable individual personalities, retarded reactions and the most serious, schizophrenia.