PSYC 2102: Test #5 FINALE!

What is a potential disadvantage of within-groups design?

What is the difference between 'b' and 'B' beta in regression results?

What does autocorrelation measure?

A mediator explains why two variables are linked, while a moderator explains for whom or when they are linked

In a within-subjects design with 3 conditions and N=12, how many different groups of participants are there?

Two variables are correlated but only linked through another variable?

In a between-subjects design with 3 conditions and N=36, what is the sample size per group (n)?

What does 'controlling for' a variable mean in multiple regression?

What is a potential issue with pre-test/post-test designs?

Type of correlation was used in the study examining the relationship between TV violence and aggression 3rd, 13th grade:

You can use multiple regression to test mediation

Unsystematic variability is a threat to internal validity

Which criteria are essential for establishing cause-and-effect relationships?

What is a variable that an experimenter intentionally keeps constant?

Which causal criteria are established through longitudinal studies?

What type of design is beneficial for smaller sample sizes?

In regression analysis, what type of variable is the criterion variable?

Which of the following is an example of a repeated measures design?

A positive relationship between the predictor and criterion variable when other predictors are controlled for:

What does a beta of 0 indicate in a regression analysis?

participants randomly assigned to 2 (or more) tested on the key DV twice—once before and once after exposure to IV

The relationship between 2 variables changes depending on the level of another variable, that other variable is called

What is the role of a mediator variable?

What statistical method helps rule out third variables in determining the relationship between two variables of interest

What are carryover effects in within-groups design?

study: background music and test performance. Group A listens to music, B does not. A takes test in morning, B does not:

What concept explains *why* a relationship exists between variables?

What is the difference between a mediator and a third variable?

In which design are the same participants exposed to every condition?

What statistical method helps rule out third variables and establish internal validity?

Which type of correlation examines the relationship between two different variables at two different points in time?

What is the purpose of using matched groups in an experimental design?

What does a narrow confidence interval (CI) for a beta value suggest?

Mediators are the same as a third variable

What technique is used to avoid selection effects by giving each participant equal chances of being in each group?

What type of variable is manipulated in an experiment?

A study has to be correlational to include a mediator

What makes experiments the only way to investigate causal issues?

What does a non-significant beta suggest about a third variable?

What does beta (β) represent in regression analysis?

occurs when a confounding variable (time of day) varies along with the independent variable (music condition)

A systematic variable is a design confound

What is the principle of parsimony in research?

What is the purpose of a cross-lag study?

What is a limitation of cross-sectional correlations in establishing causality?

What is a key advantage of within-groups design?

Which causal rule: by manipulating the independent variable before measuring the dependent variable?

also known as fatigue effects, long sequence might lead participants to get better at the task or to get tired or bored

What is the most important aspect of internal validity in an experiment?

participants in one level of the independent variable are systematically different from participants in another level

(bivariate) association claim: “Social media use is linked to lower grades in college" The two variables are:

Moderators ask who is vulnerable, mediators ask why

What statistical method allows inputting variables one by one based on the perceived relationship?

What technique helps mitigate order effects in within-groups designs?