Chapter 9 Quiz

Which popular media headline does NOT suggest that a multiple regression has been used?

"Dog ownership decreases stress."

All of the following are true of betas and correlation coefficients EXCEPT:

Betas describe the relationship between two variables exactly as correlations coefficients do.

Adding several variables to a regression analysis can help do which of the following?

Control for several variables at once

In understanding "controlling for" a third variable, which of the following is a similar concept?

Identifying subgroups

Dr. Cheong is a clinical psychologist who is curious about how people deal with natural disasters (e.g., hurricanes, tornados, earthquakes). His previous research suggests that there is a relationship between how much people feel their emotional well-being was affected by the natural disaster and their likelihood of developing posttraumatic stress disorder (PTSD) symptoms. However, he is curious as to whether the effect of emotional well-being occurs because people receive different levels of social support.Which of the following is the mediating variable in Dr. Cheong's hypothesis?

Social support

A researcher has examined a variety of correlational studies that point to a causal relationship between two variables. All of the studies have found a positive relationship between the two variables, but for ethical reasons, no experiments have been conducted. Using an approach of pattern and parsimony, the researcher may begin to make a causal claim by doing which of the following?

Specifying a mechanism or explanation for the causal relationship

In a multiple regression design, _________ variable is to dependent variable as _________variable is to independent variable.

criterion; predictor

When conducting longitudinal research, researchers typically find _________ to be the most interesting.

cross-lag correlations

If a researcher is asking why the relationship between two variables exists, she is curious about which of the following?

mediation

The degree to which a good scientific theory provides the simplest explanation of some phenomenon is known as _________.

parsimony