Social Science Homework Help

This Forum has 2 parts (questions).  Be sure to answer both parts.  (APA FORMAT)

What does it mean when a tool of assessment is characterized as reliable? Under what conditions might one expect an otherwise useful tool of assessment to be unreliable? 

Consider the meaning of the following statement: “A test is valid.” How absolute or relative is test validity? Can a test be valid at one time and place with one population of testtakers and invalid at another time, in another place, or with another group of testtakers?

(NO PLAGARISM and NEED 3 REFERENCES OR WORK CITED and Quote the Bible at least twice (ALL IN APA FORMAT))  Does not have to be written as a research paper but as an answer to the question stated.

TEXTBOOK:    Cohen, R. J., & Swerdlik, M. E. (2018). Psychological testing and assessment an introduction to tests and measurement. New York: McGraw-Hill Education.