Exam 2: Research Methods

What letter is used to represent the level of significance of a statistical effect,and what does that letter stand for?

Dr.Martinez is doing a research study examining the effects of a new headache medication on migraine pain.He decides to divide his participants up into four subject groups,each one of which will receive a different amount of medication to take when they have a migraine.The participants in group one receive a pill with 10 milligrams of the experimental medication,while the participants in group two receive a pill with 20 milligrams.Those assigned to group three receive a pill with 30 milligrams,while those in group four receive a placebo pill that has zero milligrams of the medication.Which of the subject groups is the control group in this study?

Jean Piaget did a case study of his own children,and that study formed the basis of his theories on cognitive development.

Which of the following factors needs to be taken into consideration after a study's results are statistically significant?

Hypotheses and theories are synonymous terms for the same thing - an educated guess.

Which concept is used in research to make sure that different scientists who are exploring the same concept are able to conduct a true replication of the original experiment?

Famed primatologist Jane Goodall earned international notoriety for her studies of chimpanzees.Much of her research was spent observing the animals from afar without interfering with their day to day lives.This type of research,called __________ observation,is important because it allows observation of behaviors without interfering with or changing those behaviors.

What is the relationship between the p-value of a study and its statistical significance?

Which of the following important issues are not among those that are of concern to a researcher who wants to conduct his/her project in an ethical manner?

The most efficient way to get a large amount of data from a large number of participants is to conduct a survey.

Which of the following is one of the two types of statistics that researchers use to analyze the data that they collect?

If you were interested in studying the impact that child abuse has on people later in life,you would probably be unable to use an experiment because this is an independent variable that could not be ethically manipulated.Instead,you might find a small number of people who had suffered abuse as children,and gather as much information as you could about them (with their consent,of course).This kind of research that involves gathering a lot of information about one or a few participants is called a __________ study.

A __________-report method is a form of data collection in which people are asked to rate or describe their own behavior or mental state.They are usually conducted in the form of questionnaires or interviews.

In order to eliminate the third-variable problem in correlational research,which of the following techniques can a researcher employ?

When a scientist makes predictions about new facts based on existing theories,(s)he has created a new __________.

The measure of __________ refers to the degree to which the numbers in a data set differ from one another and from the overall average (or mean)of that data set.

Your textbook presents three different types of descriptive statistics.Which of the following is,in fact,an example of an inferential statistic?

Which of the following statements with regard to the story of Clever Hans is a fact?

__________ validity indicates that a test can be generalized to the rest of the population.

________,a German mathematics teacher,bought Clever Hans in 1888.