RM Quiz 5

Which of the following is NOT possible?

a measure is valid but not reliable

What is the difference between a ratio scale of measurement and an interval scale of measurement?

a ratio scale of measurement has a zero value that actually means "nothing" or "the absence of something," but an interval scale does not

A helpful tool for visualizing test-retest reliability and interrater reliability is a:

scatterplot

Establishing construct validity is most important for which of the following?

an abstract concept

Naomi is studying the effect of popularity on academic success for her research methods project. To do this, she has elementary school students rate how popular each member of their class is. She then uses this information to rank the students on popularity (e.g., John is the most popular, Vanessa is the second-most popular). Which of the following best describes this variable?

an ordinal scale of measurement

Why are convergent and discriminant validity often evaluated together?

both involve collecting information from a lot of psychological measures of theoretical interest

In which of the following ways are content and face validity similar?

both involve subjective judgments

Asking many similar questions when trying to measure a concept is done to:

cancel out measurement error

What is the term for a researcher's definition of the variable in question at a theoretical level?

conceptual definition

According to its conceptual definition, a variable should be related to a particular behavior. If a researcher is able to demonstrate that his measure of the variable is related to the behavior, then he has established which of the following?

criterion validity

Another word for discriminant validity is __________ validity.

divergent

If a measurement looks like it is a plausible operationalization of a conceptual variable, then it has:

face validity

What does it mean that reliability is necessary but not sufficient for validity?

if a measure is valid, it is also reliable

Which types of reliability can be analyzed with scatterplots?

interrater reliability and test-retest reliability

For his research methods class, Felipe plans to watch how students treat other children in their classrooms who have attention-deficit/hyperactivity disorder (ADHD). He will evaluate how positively or negatively the children are treated by their classmates. This is an example of what type of measurement?

observational measurement

In interrogating the construct validity of a measure, which question should a researcher ask?

Is there enough evidence that this measure is valid?

A correlation-based statistic called ________ is commonly used to determine internal reliability:

cronbach's alpha

Hosea is studying the relationship between caffeine consumption and problem-solving ability. Which of the following is a quantitative way to operationalize problem-solving ability?

the time spent solving a math problem

Which of the following is true of operational definitions?

the specification of operational definitions is one of the creative aspects of the research process

Hosea is studying the relationship between caffeine consumption and problem-solving ability. Which of the following is a categorical way to operationalize caffeine consumption?

whether the participant drank a soda in the 24 hours prior to the study