<span>The correct answer is A:establishing a League of Nations. Wilson hoped that such an organization would foster communication and cooperation between nations so that they could exchange ideas more openly and lessen the idea that other nations were secretly plotting against each other. The disaster of World War I was caused in great part by a serious lack of trust and communication between the nations of Europe at that time. Wilson hoped that a League of Nations would prevent such a tragedy from happening again and included this idea in his Fourteen Points at the conclusion of the war.</span>
It is part of the marginal benefit
hope this helps you
Explanation:
There are many different ways of thinking about topics in psychology. The biological perspective is a way of looking at psychological issues by studying the physical basis for animal and human behavior. It is one of the major perspectives in psychology and involves such things as studying the brain, immune system, nervous system, and genetics.
Answer:Validity
Explanation:
Validity is measure of how valid the research is which means it gives solid relevant result which were initially intended. It is a test of how valid both your design and method of the research is.
There are various factors that can affect validity of the research.
There are internal factors that can affect validity of the research those are the ones that occur within the study such as failure to monitor vital variables of the study or using the inaccurate instrument to gather the needed data.
Below are the factors that has an impact on internal validity.
-size of the studied population
-instruments used
-history
-subject variability
-available time to gather data
- attrition
External validity are affected by the external factors such as the place where you conduct your research which may restrict the ability to obtain actual results . It can also be affected by the things like not being able to balance your subjects for example focusing on one gender and race eventhough your research is about all the types of people at large.
Crucial factors that affects external validity.
- The effect of time
- method use to collect data
- characteristics of the chosen population
- experiment effect
- interaction of subject selection
