Priests intervene and perform exorcisms on behalf of those believed to be afflicted by demons or "buda". According to a 2010 Pew Research Center study, 74% of Christians in Ethiopia report having experienced or witnessed an exorcism. Demon-possessed persons are brought to a church or prayer meeting. Often, when an ill person has not responded to modern medical treatment, the affliction is attributed to demons. Unusual or especially perverse deeds, particularly when performed in public, are symptomatic of a demoniac. Superhuman strength — such as breaking one's bindings, as described in the New Testament accounts — along with glossolalia are observed in the afflicted. Amsalu Geleta, in a modern case study, relates elements that are common to Ethiopian Christian exorcisms: