Psyclearn 2 Mastering the Content

A researcher forms the hypothesis "A student's preference for breakfast cereal is predictive of the number of cavities a student has filled before graduating from high school." For this hypothesis, a student's breakfast cereal preference is what type of variable?

predictor variable

A causal claim will include an

independent variable and dependent variable.

A researcher investigated whether the type of distraction (text message, app notification, no distraction) during a brief lecture influenced memory. The experiment was conducted with college students aged 18-23. Identify the independent variable.

Type of distraction

Identify the outcome variable for the following hypothesis: "Exercise is linked to a reduction in anxiety for adults in the United States."

Anxiety

A company was interested in whether computer monitor size caused a change in worker productivity. Worker productivity is what type of variable?

Dependent variable

Which of these is a research question that seeks the value of one or more variables?

How many employees enrolled in the company vision care plan last year?

Which of these terms may describe a causal relationship?

Leads to

Which of these is a research question about an association?

Is gender predictive of spatial reasoning ability?

What is the relationship between an association claim and a causation claim?

Causation claims are a type of association claim.

Which of these terms may describe an association?.

Predicts

A research team found that owning a cat was linked to lower levels of stress, as measured by a self-report survey, in adults over the age of 70. Another research team modified the study methods to measure heart rate and skin conductance, which are established indicators of stress. This is an example of a

conceptual replication

A scientific theory

can be abandoned if it no longer fits with the body of research.

By consulting an established scientific theory, a researcher can

develop a good research question.

Replication studies are important because they

provide information on the generalization of research findings.

A research team conducts a study on whether engaging in a meditation practice before the start of class improves students' content retention. Their participants were students taking a chemistry class. The research team later repeats the study, following the exact same procedures as before, with students taking a history class. This is an example of a

direct replication