Answer: <u>Certain gestures/symbols can be considered offensive or inappropriate in other cultures. </u>
Explanation: A medical profession could use a thumbs up to a person in America and it would not be considered rude. However, other cultures may consider this to be offensive. In many other cultures common gestures/symbols can be rude and have a totally different meaning.
Self report test are useful because they have good in reliability in which results that are obtain are reliable and are considered valid. Another thing which made them useful and be of advantage is that they don't cost too much and are considered to be inexpensive than other psychological tests.