Methods to Psy

A study finds a correlation coefficient of r = .52. According to the guidelines for interpreting effect sizes, the magnitude of this effect is
Click the card to flip 👆
1 / 20
Terms in this set (20)
A study finds a correlation coefficient of r = .52. According to the guidelines for interpreting effect sizes, the magnitude of this effect is
unusually large in psychology
Which of the following graph formats is the best way to examine an association claim between a categorical variable and a quantitative variable?
a bar graph
While reading about a research study, which of the following would tell you that an association claim is being made?
two measured variables
Which of the following does NOT depict a statistically significant association?
Correct: r = .26, 95% CI [-.08, .60]
When bivariate association claims do not meet the criteria of temporal precedence and internal validity, this means that ________ cannot be ________.
causal inferences; made
The temporal precedence criterion is also known as the ________ problem
directionality
If there is very little variance on one of the variables, this is known as
restriction of range.
A study finds a correlation coefficient of r = .52 and reports 95% CI [.37, .67]. The 95% CI is a
confidence interval.
Which of the following is true of moderators?
They can inform external validity.
In which of the following cases might a small effect still be important
when it is aggregated over many situations
RESEARCH STUDY 8.1: Dr. Guidry conducts a study examining the relationship between the number of friends one has and the experience of daily stress and life satisfaction. She randomly samples 1,500 elderly men and women in Nashville, Tennessee (the state capital), located in the southern United States. Below are her findings: • Life satisfaction and experience of daily stress: r = -.57, 95% CI [-.77, -.37] • Number of friends one has and experience of daily stress: r = .09, 95% CI [-.27, .45] • Number of friends one has and life satisfaction: r = .36, 95% CI [.12, .60] Comparing all three correlations, Dr. Guidry will be able to most accurately predict life satisfaction from the experience of daily stress because the relationshiphas the largest effect size.Experiments use random assignment to avoid which of the following?selection effectsIdentify a major disadvantage to using matched groups when assigning participants.it requires more time and resourcesResearchers conducting an experiment can ensure temporal precedence by doing which of the following?manipulating the cause before measuring the effectA variable that the researcher controls is a ________ variable.manipulatedWhich of the following is an advantage of within-groups designs?These designs rely on fewer participants.________ is used to control order effects in an experiment.CounterbalancingWhich of the following is a reason that a researcher might choose a pretest/posttest design?to ensure that random assignment made the treatment/comparison groups equalAn independent-groups design is also known as a design __________.between-subjectsWhich of the following is true of selection effects?Selection effects can occur when experimenters allow participants to choose their own treatment group.