Exam 2: Research Methods in Psychology

The middle point,when all scores are listed from smallest to largest,is referred to as the ____________ of the distribution.

A ____________ is any factor whose numerical value can change.

In interviews,people's answers can differ depending on who is asking the questions.

The ____________ is the numerical expression of the strength of a relationship between two variables.

We can predict participants' scores on Variable A with perfect accuracy by knowing their scores on Variable B,and higher scores on Variable A are associated with higher scores on Variable B.What is the correlation coefficient for the correlation between Variables A and B?

If using the scientific method in psychology,which is the MOST essential?

Dr.Gillespie has two groups in her experiment.She places each participant in a group by flipping a coin-heads means Group A,tails means Group B.Dr.Gillespie has satisfied the requirement of:

The improvement rate in a group of patients receiving a new behavioral therapy for obsessive-compulsive disorder is 62 percent.The improvement in the control group,who received no therapy,is 32 percent.The improvement in the control group is most likely due to:

If an experimenter wants to find the cause of a phenomenon,the experimenter should:

A researcher finds a strong positive correlation for academic success and reading speed.What can the researcher conclude?

Skinner discovered that a pigeon will peck at a button more often if the pecking is rewarded with a food pellet than if it is not rewarded at all.In Skinner's study,the amount of pecking is the:

Professor Willard watches children in a daycare center and notices that some children are never spoken to by any of the other children.Which form of data collection is he using?

Professor Kimball wants to find out whether there is a causal relationship between estrogen replacement and reduced heart disease in older women.Which of the following methods should he use?

____________ is the scientific principle that states that any research results should be doubted until the results are confirmed by other researchers.

Nancy is assisting her professor in conducting a survey on domestic violence,which involves asking adult males if they have ever been aggressive toward their partners.What is a significant disadvantage of her method of research?

Scientists make predictions about the likelihood that certain events will occur.When a scientist makes a prediction capable of being empirically tested,we say that he or she has formulated a(n):

Of the following,which is clearly a violation of the ethical principles for conducting research with humans?

You believe that working women are happier than are women who do not work outside the home.You predict that working women are less socially isolated than women who work at home are.You have just formulated a(n):

The main difference between a correlational study and an experiment is that in an experiment:

If two variables are positively correlated,participants who have lower scores on one variable will have ____________ scores on the other variable.