PBSI 302 Exam 1 Review

Which of the following is NOT a threat to external validity?

Look at the relationship between age and income. As you age you get more education. What kind of variable is education?

What design collects the independent variable before collecting the dependent variable with a time interval in between?

As sample size increases, power increases

What aspect of science does the quote "In God we trust; all others must bring data" pertain to?

A good measurement is reliable, valid, subjective and standardized.

Sample sizes are primarily a threat to _______ validity?

You can have negative reliability.

What kind of variable is test scores?

Correlation does not mean causality

What is the Hawthorne effect a threat to?

Billy wants the observed effect in his study to be caused only by the experimental condition. What is Billy considering?

A professor gives a Form A and form B. Although they are different tests they are equivalent. This is an example of high

What test is appropriate for a study that has 2 or more means?

What test would I use if I was looking at the association between one dependent variable and 4 independent variables?

A study with two variables has a r of -.85. What does this say about the relationship between the variables?

All studies are experiments but not all experiments are studies

Which of the following refers to the presence of measurement error?

You can have reliability without validity but not the other way around.

Internal validity is to random assignment as external validity is to random sampling

SAT and ACT scores should covary. What type of validity is this?

A pretest and postest are given. Another explanation for good scores: already took the test. What is this a threat to?

How would you operationally define the effect of frustration on aggression in preschoolers?

Which of the following is the most powerful control technique?

Effect sizes are to statistical significance as p < 0.5 is to practical significance

What is a confounding variable?

A professor puts chemistry topics on PBSI 302 exam. This exam has low

Which type of validity deals with generalizability?

What level of measurement is the Likert Scale?

Contamination is when topics in the domain of interest are omitted from the test/assessment.

What form of research inferential claim is the statement "children who play video games have shorter attention spans"?