Deck 2: Web Quiz 2

Question 1

A measuring instrument is said to be reliable when it is able to:

A)produce a consistent result if the same thing is measured twice.
B)produce results that are close to the expected results.
C)predict actual behavior.
D)covary with an independent variable.

Answer 1

produce a consistent result if the same thing is measured twice.

Question 2

One way to counteract a possible third-variable problem is to use the:

A)matched samples technique.
B)case method.
C)double-blind observation.
D)random assignment procedure.

Answer 2

matched samples technique.

Question 3

Which technique is good to use to avoid the problem of demand characteristics in an experiment?

A)revealing the expected results to the participants before starting the experiment
B)gathering scientific information by observing people without their knowledge
C)clearly explaining the true purpose of the experiment to the participants
D)asking the participants to respond to questionnaires in front of a selected sample of people

Answer 3

gathering scientific information by observing people without their knowledge

Question 4

Which value of the correlation coefficient represents the WEAKEST degree of relationship between two variables?

A)0)2
B)0)1
C)0)4
D)0)99

Question 5

Which statement about ethical research in psychology is TRUE?

A)A researcher can use monetary coercion to persuade people who are unwilling to participate in a study.
B)A researcher should obtain informed consent from research participants or their legal guardians.
C)A researcher can use deception in a research if it cannot be proved.
D)A researcher should manipulate the outcome of the study by omitting results that don't confirm a hypothesis.

Question 6

Bydale Health has developed a new cancer-fighting drug.The company tests the effectiveness of the drug by conducting research using people of all age groups.The participants are segregated into groups,and each group is given a different dosage of the same drug.In this scenario,the dependent variable is the:

A)progression of the disease.
B)amount of money spent in developing the drug.
C)number of participants in each group.
D)dosage of the drug received by the first group.

Question 7

A schoolteacher seeks help from the school psychologist because a child in her class is particularly unruly.The psychologist visits the class one day to observe the child.Knowing that she is being watched,the child is on her best behavior.Which quality illustrated in this scenario makes it difficult for psychologists to study human behavior?

A)The measure is reliable but lacks validity.
B)The measure is valid but lacks reliability.
C)The measure is reliable and valid.
D)The measure is neither reliable nor valid.

Question 8

Dr.Spelke thinks that language is linked to spatial ability.To prove it,she enlists two groups of people to navigate around the room,one of them doing so while singing a song and the other while clapping hands.In this scenario,which statement is TRUE of Dr.Spelke's study?

A)The group that claps hands serves as a control group.
B)The group that claps hands serves as an experimental group.
C)The group that sings a song is not relevant to Dr.Spelke's study.
D)The group that sings a song is positively correlated to the group that claps hands.

Question 9

_____ is forming beliefs based on observations about the world,while _____ is forming beliefs based on assumptions.

A)Dogmatism;empiricism
B)Method;dogmatism
C)Empiricism;method
D)Empiricism;dogmatism

Question 10

Which statement is NOT true of a normal distribution?

A)It has a bell-shaped curve.
B)It is symmetrical around the peak of the distribution.
C)The mean of the distribution is greater than the mode of the distribution.
D)The frequency of measurements is highest in the middle.

Question 11

Susan,a researcher,conducts a study in a vegetable store.She observes the store's customers for a period of 3 days without their knowledge and notices that people are more likely to buy a bag of vegetables which they have sampled at random than those that have been sampled nonrandomly by the shopkeeper.Which statement is TRUE of Susan's observation?

A)The study is invalid,as the buyers were not informed of the expected outcome of the study.
B)Susan has failed to avoid demand characteristics in her study.
C)The buyers have considered random samples to be representative of the whole.
D)Susan has used the double-blind observation in her study.

Question 12

In an experiment,participants are placed in either an experimental group or a control group based on the flip of a coin.This method illustrates:

A)statistical significance.
B)random sampling.
C)random assignment.
D)double-blind observation.

Question 13

Which statement CANNOT be concluded from the systematic observation that children who watch televised aggression act violently?

A)Exposure to televised aggression should be manipulated before measuring the aggression levels of children.
B)Exposure to televised aggression is likely to lead to aggressive behavior in children.
C)Exposure to televised aggression is a dependent variable.
D)Exposure to televised aggression and aggression levels of children are positively correlated.

Question 14

Raul performs a research in Norshore high school and observes that there is a negative correlation between popularity and academic success.Which statement can be inferred from his observation?

A)Students who do well academically are more likely to be popular.
B)Students who don't do well academically are less likely to be popular.
C)Students who do well academically are less likely to be popular.
D)Students who don't do well academically are more likely to be in the same social group.