Exam 4: Research Methods

A researcher studying the effect of a dietary supplement on sleep finds that research participants who take the supplement sleep an average of 7 hours and 25 minutes per night,while participants who were given a placebo pill with no active ingredients in it sleep for an average of 7 hours and 20 minutes.These findings are clearly

A research study finds sports car drivers are more likely,per capita,to die in a car crash.The makers of a sedate family sedan take delight in referring to this fact in their ads.Why are they not justified in using this finding to claim their cars are safer?

External validation is defined as

A genotype is defined as an individual's

An advantage of the multiple baseline design in evaluating treatments is that

If a match is found between the inheritance of a disorder and a genetic marker,the genes for both are probably

One of the hallmarks of the experimental method that makes it different from a correlational study is that in an experiment,

One of the problems of using a withdrawal design as part of a single-case experiment is the

Sequential design refers to

A newspaper article reports research showing that people who are single or divorced are more likely to suffer from chronic disease and to die earlier than married people.From this research,we can correctly conclude that

The implication of the fact that genetic linkage studies frequently fail to replicate when subsequent researchers repeat the study in different families is that

The two most frequently used methods in prevention research for examining psychopathology across time are

In an experiment with depressed patients,doctors gave some participants antidepressant pills while others received an identical pill with no active ingredients.Neither doctors nor patients knew who got what.If both groups improved substantially but equally,this is strong evidence that

A study that uses the controlled conditions of the lab to replicate the phenomenon under study is called a(n)

Shirley,a researcher,is interested in studying fathers' affection for their children.She randomly assigns 100 men to two groups: a control group and an experimental group.She gives each man a doll to play with and measures how affectionate they are toward the doll.The experimental group is told that the doll represents their child,but this is not mentioned to the control group.What might be a problem with Shirley's study?

The independent variable in a research study is the variable that

As Van Gogh slowly began developing schizophrenia,he painted a series of self-portraits that depicted the progression of the disorder over time.This is a good example of a(n)

Explain why it is important to make a distinction between statistical and clinical significance when interpreting research findings.

Which research method often suffers from losing research participants due to high dropout rates or even death?

While studying the impact of nutrition on intelligence,a researcher has one group of rats on a vitamin-rich diet and the other group eating Big Macs.While observing the rats run a complicated maze,the researcher notes that the vitamin-enhanced rats' maze is more brightly lit than the Big Mac rats' maze.The difference in lighting in this study is a(n)_________.