The relationship in Germany, thousands of people began to leave Germany.
Answer:
Index validation and external validation
Explanation:
External validation is like when a person feels self-pride and improvement when other people appreciate his/her work performances, thought In something they need to show that they are good enough in something.
Index validation is a scientific quality of the research. It implies the quality of the management in the European countries.
Thus professor Swanson compared the index score of the marital happiness and the index validation with the external validation.
