Answer:This threat to internal validity is called TESTING.
Explanation:
Testing refers a instant when a test is repeated with measures remaining constant as they were in the first test.
If participants are given the same test multiple times it is very likely that they may perform better only because they have mastered the test procedure and can now know how to respond better.
This will affect internal validity of the test because the result are no longer the real presentation of the outcome of the test.
Internal validity refers to how trustworthy an outcome is when looking at the cause and effect.
Answer:
Before the Industrial revolution the U.S. economy was based on agriculture. A minority of people did factory work, and they were mainly in the Northeast. The First Industrial Revolution spread to the United States in the early 1800s. The need for workers led people to move from farming areas to urban settings. It brought women and children into the labor force and families began looking for employment outside of the home. Factory growth led people to move to cities to look for work instead of being employed on their own farms. Two different social classes of people emerged—industrial capitalists, those who owned factories, and industrial laborers, those who worked in factories.
I hope this helps! You should reword it a little to make it better this was just to give you ideas C:
1. Limits on types of issues.
2.Limits on types of cases.
3. Limited control over agenda.
4. Land enforcement power.