Research Methods Final Review I

What is the main goal of a true experiment?

An F-test can be used to test significant effects for ANOVA and linear regression.

How will changing the alpha value from .05 to .10 affect your analysis?

Random sampling and random assignment are equivalent.

If comparing group differences, what does it mean if the difference is statistically significant?

If we post posters around campus to recruit a group of psychology majors, what sampling method are you using?

A study at UMD looks at attitudes about tuition increases. How could one show the study has high external validity?

In a straightforward manipulation, a participant does not know the true purpose of the study.

Probability sampling means we do not know how likely each person is to be included in our sample.

A researcher asks freshman about their attitudes toward technology and again for five years after. The design is a

How many independent variables would there be in a 2 x 2 x 3 factorial design?

Why is a confounding variable problematic in an experiment?

Which study design is best if you want to compare a pretest and posttest but think the pretest might impact the outcome?

Which of the following independent variables would mean a study has to be quasi-experimental?

A group of students gets similar scores on extraversion, but very different ones on neuroticism. What are plausible SDs?

A bullying intervention is introduced at one school and then the bullying rate is measured. What type of design is used?

Participants complete 3 sorting tasks and after each one their memory is measured. What type of design is used?

The relationship between gender on SAT score is different based on a student's self-efficacy level. What is the effect?

An alternative hypothesis states that there is a difference between groups or relationship between variables.

Which of the following do we want to generalize our response to?

How many conditions would there be in a 2 x 2 x 3 factorial design?

Which is not an order effect that might happen during a study that uses repeated measures

What would be the primary goal of adding a third level/condition to your independent variable?

I ask students how they feel while taking a test. What type of measure am I using for the variable?

What is the measurement scale of an hourly wage in dollars?

One is interested in math ability and finds that students usually score between 20-30% on a measure. Why might this be?

A senior scores in the 99th percentile of the GRE. Later they get a lower score. What most likely accounts for this?

If you give a math test (0-100) and the distribution is positively skewed, where would you expect most scores to be?

One wants to know how interest and self-efficacy predicts a student's grade. What statistical method should be used?

A researcher is interested the mean difference between two groups. What type of statistical test should be used?