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UltraKnowledge7893
A. design and experiments For your experiment, you’ll need to:…
A. design and experiments
For your experiment, you’ll need to:
Identify what the independent and dependent variables are. Remember that your independent variable will need to be manipulated, and your dependent variable will need to be measured – in your post, you should explain:
how the IV will be manipulated and
how the DV will be measured.
You will also need to have AT LEAST two levels of your independent variable, so explain what those levels are, and whether they are going to be manipulated between subjects or within subjects.
Describe how you will establish the construct validity of your independent variable – will you conduct a pilot study or a manipulation check, or is this not necessary? Why is it or is it not necessary, and what will you do?
Finally, explain why your experiment will establish a causal relationship between your two variables.
B. After reading this “In this experiment, two types of protein will be given to 100 dogs. One will receive chicken and the other group will receive beef as a diet for a month prior to the experiment. Dogs will be matched with another of similar energy levels, then randomly assigned to chicken or beef test group using the flip of a coin. This ensures that one group does not contain any dog with a higher or lower energy levels than the other. The dogs will then be exercised on a treadmill at 5 mph and how long they are able to maintain the speed will be measured.
The type of protein the dogs receive is the manipulated variable and the duration of running is the measured variable.” please suggest an alternate way to manipulate the IV or measure the DV.
c. please propose a third variable that should be controlled after reading this “For my experiment, I am interested in examining the relationship between time of day and memory. Participants who have volunteered to participate in this research study will not be disclosed to any information regarding the true intentions of what we are researching until the study has been completed. People who are a part of the study will each be randomly assigned to one of the three conditions.
My independent variable is the time of day, which will have three levels. The three levels will include morning, afternoon, and evening. So the participants don’t have any suspicions about what is being studied (which could affect the results), each person will be assigned to only one of the three conditions. They will then all be asked to complete the same exact tests in each condition, some participants will complete the tests in the morning, some will complete the same tests in the afternoon, and some will be asked to complete the tests in the evening. My dependent variable is memory, which will be measured by having each participant from all conditions take part in some recall tests. The scores will be based on whoever had a better memory during the tests, the more that is remembered means higher scores. The condition that provides the highest score will mean that that time of day is the best for memory functioning.
I don’t believe that a manipulation check would be necessary to establish the construct validity of the independent variable. A pilot study could be conducted to determine if my study is reliable, so that the reliability and validity can be adjusted if needed. I will gather a much smaller sample than used for the real experiment in the pilot study. Also, there will be all different people and none of them will be any of the same people from the original study.
My experiment will establish if there is a relationship or not between the time of day and memory functioning. This can help determine whether morning, afternoon, or evening would be more efficient to improve memory and what time of day is it best to complete tasks that involve memorizing.”
