To eliminate alternative explanations for the result of an experiment
What was the primary question that Morgan had when he started the experiment?
Someone who conducted the experiment.
A secondary source analyses and interprets a primary source. Some examples would be: a text book; the results for an experiment; or a website.
This is the following sentence to the above question as I didn't have enough space to write all of it!! It is not a true experiment because the psychologist is unable to manipulate or control variables. It has the advantage thet the participants are unware that they are taking part in an investigation and is certainly not as a laboratoty setting.
We have no way of reading your teacher's mind to guess what he or she might have been thinking in asking such a nebulous question as this. The answer your teacher is expecting is probably contained within your reading assigment, and I strongly recommend that you search it to avoid losing points.However, the primary thing (in my opinion) that you need to remember when conducting a controlled experiment is to control the experiment. Don't introduce multiple variables unless you have to, make the experiment "double-blind" to the extent possible (if your control group is getting sugar cubes while the experimental group is getting something that tastes like cotton balls dipped in alum, somebody's gonna notice), et cetera.
The primary difference is that in an experiment, the researcher actively manipulates or controls one or more variables to observe the effect on another variable, while in an observational study, the researcher simply observes and records data without intervening or controlling any variables. Experiments allow for more control over variables and can establish cause-and-effect relationships, while observational studies can only establish correlations.
What was the primary question that Morgan had when he started the experiment?
controlling data redundancy
There are primary variables that predict the likelihood of joining an interest group. The primary variables are a higher income and a higher level of education.
Controlling
Extraneous variables are factors or conditions that are not the primary focus of a study but can influence the outcome of an experiment or research. They can introduce noise or bias, potentially skewing results and leading to incorrect conclusions. Researchers aim to control or account for these variables to ensure that the effects observed are truly due to the independent variable being studied. Proper experimental design helps minimize the impact of extraneous variables.
In an experiment, the researcher manipulates a variable.
Answer Rationale: Reminder and informative advertising are used at the maturity and introductory stages of the product lifecycle respectively.
Primary source
One word: variables
The Primary Health Care Research Impact Project studied the impact of a sample of research projects, and the pathways by which they impacted on policy and practice, in order to understand how these pathways may be enhanced.
Someone who conducted the experiment.