Homesickness, boredom, withdrawal, need for excessive amounts of sleep, compulsi

Homesickness, boredom, withdrawal, need for excessive amounts of sleep, compulsive eating or drinking, irritability, marital stress, stereotyping of host nationals, hostility toward host nationals, loss of ability to work effectively, physical ailments, unexplainable fits of weeping, and exaggerated cleanliness are all symptoms of __________ __________.