Exam 2: Methods in Psychology-Part A

When every member of a population has an equal chance of being included in a sample,what sampling process is being used?

In a classic experiment,psychology students were assigned to work either with "bright" rats or with "dull" rats,described as such by the experimenter.In one task involving maze-running speed,students working with "bright" rats were more likely to stop timing early,as soon as the rat approached the goal box.This unintentional measurement error illustrates how:

Dan believes that happiness has little to do with material possessions.He makes a specific prediction that people who win the lottery will not be any happier than they were before winning.This testable prediction is termed a(n):

The term beneficient means that:

Which statement about divulging the true purpose of an experiment is TRUE?

Why do neither matched samples nor matched pairs effectively eliminate the possibility of a third-variable correlation?

What do the following have in common: a microphone concealed in the ceiling of a laboratory,filler items on a psychological survey meant to distract from a study's true purpose,and a misleading explanation told to participants about the purpose of a study?

In the number sequence 5 2 4 6 3,which number is the median?

Random selection allows psychologists to _____ the sample to the population.

From 1932 to 1972,the U.S.government conducted the Tuskegee experiment,an example of unethical research in which African-American males were denied treatment for _____ in order to study the time course of the disease.

In an experiment,researchers exposed half the children to 2 hours of violence on television every day for a month and made sure the other half saw no violence on television at all.At the end of the month,they measured the level of aggressiveness in the children.What were the children who were NOT exposed to any violence on television?

Which statement is an attribute of a good theory?

Vanessa and Jenny take a reaction-time test.Vanessa's reaction time is 0.23 seconds,and Jenny's reaction time is 0.25 seconds.Suppose that the stopwatch the psychologist used only measured to a tenth of a second.The psychologist concludes that Vanessa and Jenny have equal reaction times of 0.2 seconds.As a measure of reaction time,the stopwatch lacks:

A result is said to be statistically significant if the odds that random assignment has failed in an experiment is less than _____%.

A psychologist is hired by a company to determine which of several commercials might be most effective at television viewers' interest.The psychologist shows these commercials to a group of participants.Which measure is LEAST susceptible to demand characteristics?

Using one's senses to learn about the properties of an event refers to:

Which ethical code was developed as a reaction to Nazi atrocities during World War II?

The numerical difference between the smallest and largest measurements in a frequency distribution is the:

Studies have shown that men and women have the same mean intelligence (IQ)score but that men have a larger range and standard deviation of scores.Based on this information,which statement is TRUE?

Which characteristic describes a normal distribution?