Research methods psychology

When do we use ANOVA?

• when there are 2 or more means

• when there are 3 or more means

• when single IV has more than 2 levels between group design

• when single IV has 2 levels between group design

Which are correct statements of planned comparison and Post-Hoc analysis?

• Planned comparison is used when you wish to test specific hypothesis on the differences between a subset of your groups (based on theory/past research)

• Post-Hoc analysis is used when you want to conduct a whole sets of comparisons (exploring differences between each group/condition)

• Post-Hoc analysis guards against Type I error

• Planned comparison does not guard against Type I error

In Post-Hoc analysis, Tukey is used when... while Dunnett's C is used when...

• variances are equal; variances are not equal

• variances are not equal; variances are equal

One-way repeated measures ANOVA is different from One-way ANOVA because...

• one-way repeated measures ANOVA measures the same participants over and over again (within group design)

• one-way repeated measures ANOVA tests related groups

• one-way repeated measure ANOVA tests independent ones

• one-way repeated measures ANOVA measures different participants

Which of the following Multivariate test is most widely used?

• Pillai's Trace

• Wilks' Lambda

• Hotelling's Trace

• Roy's Largest Root

Which of the following are related to Single/One-sample t-test?

• DV is continuous

• DV is normally distributed

• cases of samples should not be independent

• is used when we want to know the mean difference between the sample mean & the known value of the population mean

Independent sample t-test is for... while Correlated/Paired samples t-test is for...

• within subjects; between subjects

• between subjects; within subjects

Which of the following are the assumptions of independent sample t-test?

• the variances of two populations are equal

• the two samples are independent

• both samples are simple random samples from their respective populations

• the distribution or the population is that of a normal distribution or a normal population

Which of the following are examples of operational definition for depression?

• Depression is a common and serious medical illness that negatively affects how you feel, the way you think and how you act.

• Depression causes feelings of sadness and/or a loss of interest in activities once enjoyed.

• Depression is the score on a mood questionnaire.

• Depression is number of times someone has thought about suicide in the last month.

Which of the following is the main advantage of naturalistic observation?

• High internal validity

• High external validity

• Save money

• Save time