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Tests and Measurements Midterm
Resarch class midterm
44
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Undergraduate 2
10/10/2016

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Cards

Term
Name and explain the parts of an informed consent (open ended)
Definition
Check study guide
Term
3 differences between qualitative and quantitative studies and examples(open ended)
Definition
Check study guide
Term
Name and explain parts of a research study (open ended)
Definition
Check study guide
Term
Explain the advantages and disadvantages of between and within group studies (open ended)
Definition
Check study guide
Term
What causes change in the dependent variable?
Definition
The independent variable
Term
What is the variable that researchers can change?
Definition
Independent variable
Term
What is the variable that researchers cant change and why?
Definition
Dependent variable because it is the outcome of the independent variable
Term
How many independent and dependent variables must be present in a study?
Definition
At least one of each
Term
What is an experimental study?
Definition
Its a study when researchers give treatments and observe if they cause changes in behavior?
Term
What is something experimental studies have but nonexperimental studies don't?
Definition
A control group
Term
What is a nonexperimental study?
Definition
Its a study that researchers don't provide treatments for, they observe the participants to describe them as they naturally exist.
Term
What is a form of unbiased sampling?
Definition
Random sampling
Term
What are the forms of biased sampling?
Definition
Sample of convenience, volunteerism, and if the study doesn't consider all of a population
Term
What makes a study valid?
Definition
If it measures what it is designed to measure and accurately performs what is it supposed to
Term
What makes a study reliable?
Definition
It has consistent results
Term
Can you have validity without reliability?
Definition
No
Term
Can you have reliability without validity?
Definition
Yes
Term
Is validity or reliability more important?
Definition
Validity
Term
What must a test have to be useful
Definition
validity and reliability
Term
What does internal validity question?
Definition
Is this treatment responsible for the observed change?
Term
What does external validity question?
Definition
The whom and under what circumstances can results be generalized?
Term
What is the dependent variable called?
Definition
Presumed effect, "Y", the measured variable, criterion, response, outcome
Term
What sis the independent variable called?
Definition
Presumed cause, "X", the changeable variable, the predictor, stimulus, input
Term
A fitness instructor is concerned with pretest to posttest differences in percent body fat for subjects involved in water aerobics training class. What type of experiment design is it?
Definition
Experimental
Term
Quantitative research asks the how or why to explore research topic areas, whereas qualitative research relies on numerical data to reach results and conclusions. (T/F)
Definition
False (other way around)
Term
A researcher wants to examine if there are gender differences for attitudes toward exercise. The dependent variable is gender and the attitude toward exercise is the independent variable (T/F)
Definition
False (other way around)
Term
The major steps in performing the study are typically found in the
Definition
Methods
Term
The proposed hypothesis or research question is often found at the end of the
Definition
Introduction
Term
Determining the number of times per day a cat uses the litter box. What type of study design is this and why?
Definition
Observational (cant make a cat poop so it not an experimental design because youre not enforcing a treatment, so its nonexperimental design)
Term
Determine whether Gatorade or water is better for bicycle time trial completion time. What type of study design is this and why
Definition
Within-group because you can use the person as their own control for the study and can be in both groups
Term
Determine whether males or females consume more fluid during a marathon. what type of study design is this and why
Definition
Observational because you cant make someone run the marathon
Term
Investigating the effect of daily aspirin use for cancer prevention. what type of study design is this and why
Definition
Quasi experimental because the independent variable and group assignment is not controlled by the instructors
Term
Determining whether training for 2 months while holding your breath for 25 meters or breathing every 4 strokes leads to faster swim times. what type of study is this and why
Definition
Between group because participants cant be in both groups because the cooling off period would be to long
Term
What are the threats to internal validity?
Definition
History, maturation, mortality, instrumentation, testing, statistical regression, and selection
Term
What are the threats of external validity
Definition
selection bias, reactive effects of experimental arrangements, pretest sensitization, multiple treatment interference
Term
What cant a quasi experiment control?
Definition
Participant assignment and the independent variable
Term
What would the concept of reliability would be most closely associated with?
Definition
Consistency
Term
If a test is measuring what it is designed to measure, it is said that the test is
Definition
Valid
Term
A variable that you control for your study is called (the variable that can have a negative effect on your study)
Definition
Confounding variable
Term
How do you determine cause and effect (3 things) and name a few ways we do this well
Definition
1)An effect cant happen without a cause
2)The cause must come before the effect
3)They must happen in a short time period of eachtoher
-Organiztiona and eliminating possibilities of confounding variables
Term
Why are casual-comparative studies and correlational studies not exactly the same?
Definition
Because a correlational study does not equal a cause and effect
Term
What is a hypothesis and what are the 3 types (name and explain)
Definition
-A theory based on other data
1)Research hypothesis: directional (Clearly stated cause and effect/ If this happens than blank happens)
2)Null hypothesis: (Ho) nonspecific (there is no relationship between 2 variables)
3)Alternative hypothesis: (H1)nonspecific (here is a relationship between variables but isn't specific)
Term
The risk of developing lung cancer among smokers and non-smokers. (Observational or experimental and why)
Definition
Observational because you cant make someone smoke and get lung cancer
Term
Determine if pickle juice is good rehydration beverage (Observational or experimental and why)
Definition
Experimental because you can tell the participant to drink pickle juice
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