Exam 2: D: Research Methods

Suppose in a classroom of students some arrive early to class,but most students arrive just moments before class begins,and no one comes in after class has started.What could you say about the distribution of student arrival to class?

An example of the use of population stereotypes in cold reading is a statement such as

Besides random assignment,what other component is necessary for a study to be considered an experiment?

Which historical example was one of the first demonstrations of the experimenter expectancy effect?

If you were to read about a psychological study in each of the following magazines,in which source should you place more confidence that the study was presented accurately?

The purpose of a peer reviewer is to act as

__________ occurs when the media presents balanced coverage on a topic (e.g. ,ESP)that is superficial and makes it seem like there is a scientific controversy where none exists.

The large difference in the percentages of women who admitted to extramarital affairs in the Hite Report on Love versus a Harris organization pool was most likely due to

Suppose children watch an adult display physical violence toward a blown-up clown doll in a room full of toys,followed by either a stern scolding or praise by another adult.The child is then left in the room of toys,and the researchers watch to see if the child models any of the aggressive behaviour.Children who witnessed the scolded adult don't act aggressively,either because they did not learn the aggressive behaviour or they learned that aggressive behaviour is punished.What is the confounding variable?

A fictional study revealed that there is a negative correlation between exam grades and the average number of glasses of beer (r = -.52),wine (r = -.63),coolers (r = -.46),or hard alcohol (r = -.59)consumed each night.Which of these alcoholic beverages shows the strongest association with poor exam performance?

Suppose at the movie theatre you observe that a few patrons arrive early,but most arrive just moments before the movie begins,and no one arrives late.What could you say about the distribution of patron arrivals at the theatre?

In the 1930s,J.B.Rhine at Duke University began to study extrasensory abilities using __________ cards,which consisted of five unique symbols (wavy lines,a star,a circle,a plus,and a square).

Samantha signs up for a psychology experiment and is told that the study involves people's study habits by themselves or in groups.She is assigned to an individual study room and given a packet of materials to study.She also notices that she can hear music through speakers in the room and wonders whether the experiment is really about whether music distracts people while they are studying.She decides to try even harder to study the material she was given and ignore the music.This example best demonstrates the concept of

Suppose you seat yourself in a cafeteria to count up which checkout line students will prefer: the one staffed by a visible minority or the other line.This is an example of which research design?

Which descriptive statistic is least likely to be influenced by the presence of skewness?

Suppose researchers found no link between autism and immunizations.This would be an example of a(n)__________ correlation.

A therapist wishes to show that his new therapy is a marked improvement over the current best available therapy.To do so,he examines the number of participants who improved with each.A total of 125 participants received his treatment (and 100 of them improved).A total of 80 participants received the alternative treatment (and 64 of them improved).What should the therapist conclude?

An administrator believes that the placement of motivational posters on the walls in classrooms of academic buildings will lead to increased grade-point averages at his school.To test his theory,in one of the academic buildings he randomly assigns certain classrooms to have the posters while others do not.None of the remaining four buildings on campus have any posters placed in their classrooms.What is the independent variable in this study?

Mentalists who specialize in psychological magic may offer clients a __________,which refers to the art of persuading someone you've just met that you know all about them.

Because respondents are not always honest in their answers,researchers may elect against using