The teachers present at the teacher's lounge could be there for a variety of reasons, for example it could even me a meeting of the supporters of the school uniform! his sample is therefore possibly biased - there is no way of knowing that it represents the whole population. He chose it because it was convenient to him - and the answer is "a, convenience sampling"
Activity theory is a framework or a descriptive tool for a system. Consider the entire activity/work beyond just one actor or user. Accounts for environment, history of a person, culture, role of the artifact, complexity of real life action etc...
Answer:
Check Explanation.
Explanation:
So, the question is about a research or an experiment on whether the intake of cola causes a lot of or severe headaches. And I will be using myself as the control experiment. Please note that I just did not want to use myself as the control experiment but because the question ask us to. That is the use of "single case design" which means that the person performing the experiment must use himself or herself as the control experiment instead of using another person.
Step one => I will make sure to know how often or how many times I do do get headaches.
Step two => I will then stop taking the cola, but after sometimes I will continue taking the cola back.
Using the single case design, I can test for my Hypothesis using the following steps;
For step two above, if during the period that I stopped taking cola, I did not have any headache and immediately I start taking the cola I started developing headaches, then
it is true that the artificial sweetener in the cola is responsible for the headaches.
To the second part of the question; I expect to find that that the artificial sweetener in the cola is responsible for the headaches.
My conclusion will be that the artificial sweetener in the cola is responsible for the headaches.
Most states have laws requiring that you pass under bridges at a slow speed. You should always reduce your speed and proceed with caution near any bridge or man-made structure that decreases visibility and passage. Many bridges are high enough to allow normal boat passage.
A researcher who focuses primarily on emotional responses, learned fears, and other learned expectations is focusing on psychological influences. According to businessdictionary, psychology is the study of the human mind and behavior. "The psychologist was called to the witness stand to explain the psychological reasons why and how the defendantmight have acted in such an unpredictable manner."
