“…For example, auditory hallucinations seem to be the most frequently reported by schizophrenic patients in the West, with visual hallucinations only appearing in the more deteriorated patients (Strauss, 1962;Mueser, Bellack, & Brady, 1990). In contrast, a number of studies have found that visual hallucinations are a more common type of hallucination in African and Asian countries compared to the West (Al-Issa, 1977, 1978Murphy et al, 1963;Ndetei & Singh, 1983;Ndetei & Vadher, 1984;Sartorius et al, 1986;Zarroug, 1975). More recently, Okulate and Jones (2003) report that the frequency of auditory hallucinations that were commanding, abusive, cursing, arguing and frightening was generally lower among their Nigerian schizophrenic patients compared with those in the UK, based on the study by Nayani and David (1996).…”