The knowledge and experiences of the staff of a psychogeriatric nursing home can be used to improve the care for residents with psychogeriatric problems of a home for the aged. Staff members of the nursing home Nieuw Toutenburg in Noordbergum taught psychogeriatrics in eleven homes for the aged. Subsequently a psychologist and a nurse provided additional support during eight months. The use of care-schemes and staff meetings concerning the care-planning for the residents were introduced. In the homes for the aged knowledge about psychogeriatrics tested by 89 course participants increased and remained stable over a period of at least three months. The care organization in the homes had changed: systematic reports about the residents with psychogeriatric problems were made and staff meetings for care-planning were regularly held. These changes persisted over at least three months after the staff of the nursing home had withdrawn.