Which of the following statements about nation-states is true? 1. Most of the world's countries are nation-states because their culture is homogeneous.
2. There are few true nation-states in the world because most of the world's countries have multiple ethnic groups.
3. Most nation-states have a population speaking multiple languages.
4. Nation-states experience fewer border control issues than countries.
5. The nation-state is an outdated concept, and it is unlikely that any nation-states will be established in the future.

like many students at university, you may be unhappy about the results you attain in exams. you may feel that even with all you are doing there must be something more -- or different-- you could be doing to get better grades. we have all at some time or other heard of that student who only studies a couple of hours for final exams and scores a's every time. we stand in awe of those who seem to breeze through without undue effort and seem to need very little in the way of studying to nail an exam. the reasons for success, in what i think are the vast majority of cases, are less esoteric than many students think: successful students consistently apply a series of productive strategies with view to attaining clearly identified learning and grade goals throughout the academic term.

the answer is not negative reinforcement.