Authoritarian regimes are also sometimes subcategorized by whether they are personalistic or populist. Personalistic authoritarian regimes are characterized by arbitrary rule and authority exercised mainly through patronage networks and coercion rather than through institutitions and formal rules..
Common causes of conductive hearing loss include: 1  Cerumen (earwax) or foreign body in the external auditory canal. 2  Otitis externa, infection or irritation of the outer ear.  Exostoses, abnormal growth of bone within the ear canal.
Otitis media is the most common cause of conductive hearing loss in children.6 Middle ear effusions decrease the mobility of the tympanic membrane and the ossicular chain. This loss of mobility results in an average hearing loss of 20 to 30 dB.