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Concepts
Reliability/Validity
Designs
Analysis
Pop Quiz
100
Experiment Design
What is a study used to make predictions and determine causation (contains an IV, at least 1 DV and uses random assignment).
100
Internal validity vs. External validity
What is the trustworthiness that what you did in your study caused your outcome or results versus how would your conclusions generalize to other populations.
100
Mary's study has 1 IV and 2 levels that are independent of each other.
What is a Simple experiment.
100
Type of statistic you run to get Means and SD.
What is Descriptives?
100
When you retain your null hypothesis you have a chance of making this type of error.
What is Type II. * Bonus- 100 points- How much of a chance will there be that you make this error?
200
Operational definition
What is used to define a measurable construct- how your DV will be measured.
200
Julie wants to assess the reliability of the questionaire she is using in her study. To make sure it has good internal consistency it would have to have a .70 or better of this alpha.
What is Chronbach's alpha. *Bonus-100 points-how do you check this? See your SPSS manual.
200
With a simple experiment you run this type of analysis to test your hypothesis.
What is an independent-samples t test.
200
To get information about statistical significance you have to run these types of statistics to get your p value.
What is inferential statistics. *Bonus-100 points -Name 3 types.
200
Asking a question on your survey that lets you know that your participants paid attention and noticed what was being manipulated.
What is a manipulation check. Give an example.
300
Statistical significance
What is the probability that your results occurred by chance alone or other factors. *Bonus 100 pts- is also known as the ____________.
300
A researcher gives his subjects the same test at different times in order to show reliability of the measurement over time. What type of reliability is he looking for?
What is Test-retest reliability.
300
Joe wants to do a study with 1 IV that has more than 2 levels. His design would be this.
What is a Multiple-group experiment. *Bonus-100 points-to test his hypothesis he would run ____________.
300
A Pearson's correlation coefficient was calculated to examine the relationship between years lived on campus and happiness at school. If r=.65, p=.03, what type of relationship was found? Are these results significant?
What is a strong, positive relationship between years lived on campus and happiness at school with r being greater than .50 meaning the correlation is strong. The p value is less than .05 which makes it significant.
300
Mary found statistical significance at p =.04 and she rejected her null hypothesis. There's a chance she is making what type of error?
What is Type I error.
400
Effect size
What is the percentage of variablity that is directly attributed to the IV manipulation. *Bonus- 100 points- how is this reported?
400
List at least 3 types of validity.
What is Construct validity-the degree to which your scale measures the construct( such self esteem) that it intends to measure. Content validity-the degree to which the scale measures all dimensions of the construct. Predictive validity- the degree to which a test can predict or correlate with other tests of the same construct. Convergent validity- the degree to which a test is similar to other tests of the same type. Divergent validity- the degree to which a test is dissimilar to tests of different types( math test vs. fitness test).
400
If you find significance between your levels on a one way ANOVA you must run this test.
What is post hoc LSD analyses.
400
You want this to be more than .05 to show that equal variance is assumed.
What is Levene's test? *Bonus-100 points - When do you report Levene's?
400
Name 5 ways that you can ensure that your study if ethical.
Answers vary- informed consent, make sure your participants are 18, get parent's consent if under 18,maintain confidentialty, allow participants to withdraw and debrief. What are other ways?
500
Power
What is the ability to find statistically significant results when they in fact exist (or the ability to reject the null hypothesis when it is in fact false).
500
List 3 features to consider when selecting your DV.
What is 1)Reliable-responses would be consistent over time. 2) Valid- content validity:includes all relevant content under examination. 3) Criterion validity-predicts behavior or ability as intended.
500
A study was conducted in which students either talked to a confederate about a personal topic or a non-personal topic. Some students were in the cafeteria and some students were in the laboratory. The students were told that the study was about nonverbal behaviors during conversations. Name the design.
What is a 2x2 between subjects factorial. *Bonus- 100 points- to make this a hybrid, what would you do?
500
Ellen is examining the effect of music on test performance. She randomly assigns participants to one of three conditions:silence, classical music or rap. Name the design and appropriate analysis for this study.
What is Multi-level independent groups(Simple experiment). One way ANOVA- if significant, run post hoc LSD analyses.
500
You can increase the power of your study in these ways.
What is 1)make sure your measure is sensitive to change, 2)get rid of confounds, 3)make sure your manipulation is strong-use more extremes of the variables, 4)increase sample size and within-group homeogeneity or between-group heterogeneity.