The outcome measure in a study is also known as the________ variable
Dependent
100
A researcher is collecting data on participant’s attitudes, beliefs, opinions, and experiences. He will use questionnaires and interviews to collect this data. What kind of research is this?
What is Survey Research
100
This is not possible in most quasi-experimental designs. Hint: think about the difference between a true experiment and quasi-experiment
What is random assignment
100
This does not happen with variables in correlational studies. The researcher does not _______ the variables.
What is manipulation or manipulate
200
Sampling effects our ability to generalize our results from the sample to the population. This is also known as______ validity
External
200
_________,________, and ________ are three types of response styles
Yay-saying, nay- saying, position preference, and willingness to respond.
200
Name the three types of t-tests
independent samples, One-sample, and Paired(matched) samples
200
Name three types of research designs
cross-sectional, longitudinal, cross-sequential, correlational, quasi experimental, true experiment, naturalistic observations.
200
Correlation does not imply this
What is causation
300
Dr. McDowell wants to compare means between two groups in her study. What kind of data analysis should she use?
T-test
300
____ and _____ are the two broad categories of sampling methods.
Non-probability and Probability sampling
300
Map out the Solomon 4 Group design. (on a sheet of paper)
(Group1 Pre Treatment Post)
(Group 2 Pre Post)
(Group3 Treatment Post)
(Group4 Post)
300
Correlation coefficients have four properties:
linearity, sign, magnitude, and probability.
300
The type of graph used to visually represent a correlation is______
What is a scatterplot
400
Shawn wants to assess the linear relationship between two variables. He also wants control for a third variable. What type of statistical analysis should he use?
A Partial Correlation.
400
This type of sampling is convenient because the researcher uses participants to find other participants.
What is a potential threat to validity with this sampling method?
Snowball sampling. Selection threat, because participants are likely to find people similar to themselves( i.e. friends and family)
400
What are three reasons correlation does not equal causation.
There are three additional reasons that correlations cannot prove causation:??(1) casual direction??(2) bidirectional causation??(3) the third variable problem
Lack of control/ no manipulation
400
This is another name for r-squared (Hint: r-square in a correlation is called what?)
What is the coefficient of determination
500
Annie is studying the relationship between dating and happiness. She visits a local mall and asks shoppers to complete her questionnaire. What kind of sampling method is she using?
Convenience Sampling
500
What are three concerns when constructing a survey? What three things should a survey researcher keep in mind when creating a survey?
Keep items simple and unambiguous, and ?avoid double negatives. ?
Avoid double-barreled (compound) questions that require responses about ?two or more unrelated ideas.
Use exhaustive response choices.
Make questions interesting
Ask important questions early on.
500
A research study is conducted to determine if Zoloft decreases depressive symptoms. The study places participants in two groups, one group receives a placebo and the other group receives 75 mg of Zoloft. What are the independent and dependent variables?
Dependent- amount of depressive symptoms. Independent- medication (Zoloft and placebo)
500
Researchers use_________when they want to know whether there is a relationship among three or more variables.