Exam 5: Variables, Reliability, and Validity

A variable is an event or characteristic that has at least three possible values.

Recently, the Mozart effect was studied by Jones and Estell by dividing high school participants into two groups.The first group listened to Mozart's music and the second group did not.Both groups completed a series of spatial problems tasks.In this example, what was the experiment group?

The following terms are all examples of validity: external, internal, construct, test-retest, and convergent.

The dependent variable is the variable being manipulated.

Which of the following statements is correct?

A researcher is interested in determining if different exercise programs have an influence on the amount of weight that participants lose.Upon arriving to the experiment, the researcher assigns the participants to different exercise programs and measures the amount of weight lost over a two-month period.In this example, the amount of weight lost is the _________.

The placebo control group is similar to the control group in that __________.

A variable is __________.

Reliability is the accuracy of a measure to evaluate what it is supposed to measure.

Think about variables used in research.Of the following terms, which term below fits least well?

Split-half method is a measure of reliability in which a measure is divided into half and the two halves are compared.

The placebo control group is different from the control group because _________.

Recently, the Mozart effect was studied by Jones and Estell by dividing high school participants into two groups.The first group listened to Mozart's music and the second group did not.Both groups completed a series of spatial problems tasks.Results showed that the group of participants who listened to Mozart's music had higher scores on the spatial problems tasks.In this example, what is the independent variable?

with an Are You Equipped exercise highlighting the debate between Apple and Microsoft.In this example, the two competing commercials served as the __________.

__________ is the extent to which obtained results in a study can be generalized to other settings.

__________ argues that your measure should be dissimilar to measures of different variables.

__________ is the likelihood that the device or scale used to measure a variable actually is related to the topic or theory of interest.

At the beginning of chapter 5 in the Are You Equipped exercise, the two competing commercials served as the independent variable.

A subject variable is a characteristic or attribute of a participant that cannot impact a study.

An) __________ is a characteristic or attribute of a participant that can impact a study.