Exam 4: Research Methods in Psychopathology

What type of research enabled psychopathologists to discover that Attention-deficit/Hyperactivity Disorder is more common in boys than in girls?

Dr.Dominguez conducted a study of children with attention-deficit/hyperactivity disorder.She developed a new medication that was significantly better than placebo in treating the disorder,but this effect was not found in a similar study conducted in another laboratory.Dr.Dominguez's study has __________ internal validity and __________ external validity.

Dr.Samuelson finds that the relation between level of hopelessness and suicide is .35,and there is a less than 5 in 100 probability that this was found by chance alone.What would be concluded about this correlation?

In correlational studies it can be hard to show which variable led to a change in the other variable.This is a problem with

"About 2% of adults have obsessive-compulsive disorder." This is a statement about the __________ of obsessive-compulsive disorder.

Eric is concerned about the distribution of schizophrenia in a particular city.To answer his question he would have to look at the findings of a(n)__________ study.

Dr.Lee has been treating someone with an unusual combination of symptoms.He notes that there is no published research on such a combination of symptoms,and considers developing a case study.How would Dr.Lee conduct this study?

Lenny is enrolled in a study examining the psychological treatment of phobias.He sees a therapist weekly and receives support and encouragement,but no gradual exposure.Lenny is most likely in

If a correlation between depressive symptoms and active treatment is clinically significant this means

Dr.Wilhelm randomly assigned 50 depressed patients (half women and half men)to two groups for treatment.One group received medication and the other received cognitive therapy.Ratings of the depression level of the subjects were taken before and after treatment.The rating of subjects' depression level is the

Researchers went door to door conducting structured diagnostic interviews to determine how common particular psychiatric diagnoses were.Which type of research was this?

Statistical significance is used to evaluate

Chris is suffering from a migraine headache.His mother gives him a small white pill to take and tells him that it is a new medication specifically for migraines.After taking the pill,Chris reports feeling a bit better.The pill was actually just a breath mint.This phenomenon is an example of

When examining a scatter diagram,the __________ scattered the points are distributed,the __________the correlation.

The single subject ABAB design cannot be used to study behaviors that

In research using the twin method,a disorder is heritable if the concordance is __________ in DZ compared to MZ twins is

If variables were found to be unrelated their correlation coefficient would be:

A good theory should

Dr.Smart conducted a study that examined the physiological reactions of rats reared in isolation to the introduction of a stranger rat in their cage.She wanted to examine the effects of growing up in isolation on social behavior in order to understand more about social phobia in humans.This study is an example of

A risk factor may be best defined as