Stats Review
Experiments
Threats to Validity
APA Style
Potpourri
100
On average, how much each observation deviates from the sample mean.
What is standard deviation?
100
Group(s) that receives no treatment or the standard treatment
What is the control group(s)?
100
When the experimenter is aware of the study’s hypothesis and unknowingly influences the results to support the hypothesis.
What is experimenter bias?
100
Goes at the very end of your introduction
What is you hypothesis?
100
When your sample’s demographics match on to the population of interest
What is a representative sample?
200
The prediction that there is no difference between your groups
What is the null hypothesis?
200
Manipulation & Random Assignment
What are the two requirements for an experiment?
200
Any natural changes to participants during your study that could affect their performance
What is maturation?
200
The 3 major subsections of the "Methods" section.
What are (a) participants; (b) measures; and (c) procedures?
200
The part of your manuscript where you discuss the limitations of your study
What is the discussion?
300
The agreed upon alpha level for hypothesis testing
What is .05?
300
How confident we are we confident that changes in our IV caused the changes in our DV
What is internal validity?
300
Features of a study that make the purpose of the study obvious to participants or encourage them to behave in a particular way.
What are demand characteristics?
300
In the results section, everything except p-values should be rounded to ____ decimal places.
What is two?
300
Descriptor for a sample where the mean, median, and mode are all the same.
What is a normal distribution?
400
The correct statistical test anytime we have (a) one categorical IV with TWO levels, and (b) one continuous dependent variable.
What is an independent t-test?
400
Eliminates the “what about individual differences?” problem in experiments
What is random assignment?
400
Extreme scores tend to become less extreme when measured again
What is regression towards the mean?
400
The last section of your paper that you should write.
What is the abstract?
400
The author of the 1946 study we based Experiment #1 on.
Who is Asch?
500
The correct test for comparing a sample mean against a hypothesized population mean
What is dependent (one-sample) t-test?
500
Varies systematically with one level of the IV but NOT the other
What is a confound?
500
Tendency for surveys to be dominated by people with strong opinions.
What is non-response bias?
500
DOI
What is the digital object identifier?
500
What broke Dr. Appleby's foot.
What is the dishwasher?
M
e
n
u