Answer:
Validity
Explanation:
In research, the term validity refers to the fact that you are actually measuring what you are claiming to be measuring. In other words, your study is valid if it measures what you want to actually measure.
In this example, Dr. Valencia is conducting a study examining whether narcissistic people have poorer social interactions. However, she is concerned whether her scale will really measure narcissism or if it will measure some other concept. In other words, <u>she is worried that her scale is actually measuring what it claims to be measuring. </u>Thus, she is concerned about the scale's validity.
Beginning in the eighth century B.C., Ancient Rome grew from a small town on central Italy's Tiber River into an empire that at its peak encompassed most of continental Europe, Britain, much of western Asia, northern Africa and the Mediterranean islands.
