Midterm 3 quiz-ch.10

Cara is running a study to examine the effect of music on mood. She randomly assigns participants to three conditions — rock, jazz, and country. She has the participants rate their mood with a short questionnaire, then listen to their assigned music for 20 minutes, and then fill out the mood questionnaire again. What kind of design is she using?

Dr. Keller wants to test the effect of a new anti-anxiety medication. He recruits a group of anxious patients and randomly assigns them to two groups. One group will receive his new medication and the other will receive a sugar pill. What is the second group called?

What is the name for a variable that the experimenter holds constant on purpose?

What is the name for the level of the independent variable that is intended to represent a neutral condition?

Participants in a research study are given a list of words to study for 3 minutes and then, following a delay, are asked to recall the list. The length of the delay is manipulated between participants to be either 2 minutes, 5 minutes, or 10 minutes. Which of the following scenarios would present a design confound in this experiment?

Participants in a research study are given a list of words to study for 3 minutes and then, following a delay, are asked to recall the list. The length of the delay is manipulated between participants to be either 2 minutes, 5 minutes, or 10 minutes. Since different groups need different amounts of time, the first 25 participants who arrive are assigned to the 10-minute group, the next 25 are assigned to the 5-minute group, and the final 25 are assigned to the 2-minute group. What confound does this create?

Kathryn wants to control for intelligence in her study. She has a list of all of the participants for her study and their IQ scores. She sorts the list of participants according to their IQ scores and then forms groups making sure that the groups are balanced in terms of IQ scores. Finally, she randomly assigns each group to one of the conditions of her study. What kind of design is Kathryn using?

What design is an experiment in which each participant is randomly assigned to one level of the independent variable and then tested on the dependent variable once?

Which of these is NOT an advantage of within-groups designs?

Which of the following does NOT need to be considered as an alternative explanation of the results in a within-groups design experiment?

How many possible orders for full counterbalancing are there in a study with four conditions?

Eric designs a study to examine drink preferences of university freshmen. He is planning to have all of the freshmen who participate in his study drink a cup of coffee then rate their enjoyment of the coffee, then drink a cup of tea and rate their enjoyment of the tea, and finally drink a cup of milk and rate their enjoyment of the milk. Eric tells Theresa about the plans for his study and she says she is concerned that he could have a problem with order effect in his study. How can Eric fix this problem?

Which of these is NOT a potential drawback of a within-groups design?

Eric designs a study to examine drink preferences of university freshmen. He is planning to have all of the freshmen who participate in his study drink a cup of coffee then rate their enjoyment of the coffee, then drink a cup of tea and rate their enjoyment of the tea, and finally drink a cup of milk and rate their enjoyment of the milk. What kind of design is this?

According to Cohen's conventions for effect size, how do you describe an effect size when d = 0.50?

In psychology lab, Tetiana is conducting an experiment on depth perception using the Howard-Dolman box. Inside the box are two vertical rods and a horizontal ruler. The participant manipulates the rods until they appear to be aligned at the same distance away, then the experimenter measures how far out of alignment they are. There are three conditions: left eye only, right eye only, and both eyes. Tetiana is using a repeated-measures design. What is the independent variable in this experiment?

In psychology lab, Tetiana is conducting an experiment on depth perception using the Howard-Dolman box. Inside the box are two vertical rods and a horizontal ruler. The participant manipulates the rods until they appear to be aligned at the same distance away, then the experimenter measures how far out of alignment they are. There are three conditions: left eye only, right eye only, and both eyes. Tetiana is using a repeated-measures design. What is the dependent variable in this experiment?

In an experiment, researchers:

In psychology lab, Tetiana is conducting an experiment on depth perception using the Howard-Dolman box. Inside the box are two vertical rods and a horizontal ruler. The participant manipulates the rods until they appear to be aligned at the same distance away, then the experimenter measures how far out of alignment they are. There are three conditions: left eye only, right eye only, and both eyes. Tetiana is using a repeated-measures design. She finds that d = 1.53. What effect size is this?

In psychology lab, Tetiana is conducting an experiment on depth perception using the Howard-Dolman box. Inside the box are two vertical rods and a horizontal ruler. The participant manipulates the rods until they appear to be aligned at the same distance away, then the experimenter measures how far out of alignment they are. There are three conditions: left eye only, right eye only, and both eyes. Tetiana is using a repeated-measures design. How is the independent variable being manipulated in Tetiana's design?

In a business class experiment on the endowment effect, Theo is comparing the value of a coffee mug to someone who owns it and is selling it to someone who is buying it. The endowment effect describes the tendency of sellers to value something they own more than buyers do. Participants are randomly assigned to be buyers or sellers of a mug with their first name on it. Buyers select the maximum price they would pay for the mug. Sellers select the minimum price they would accept for the mug. What is the independent variable in this experiment?

In a business class experiment on the endowment effect, Theo is comparing the value of a coffee mug to someone who owns it and is selling it to someone who is buying it. The endowment effect describes the tendency of sellers to value something they own more than buyers do. Participants are randomly assigned to be buyers or sellers of a mug with their first name on it. Buyers select the maximum price they would pay for the mug. Sellers select the minimum price they would accept for the mug. What is the dependent variable in this experiment?

In a business class experiment on the endowment effect, Theo is comparing the value of a coffee mug to someone who owns it and is selling it to someone who is buying it. The endowment effect describes the tendency of sellers to value something they own more than buyers do. Participants are randomly assigned to be buyers or sellers of a mug with their first name on it. Buyers select the maximum price they would pay for the mug. Sellers select the minimum price they would accept for the mug. How does Theo control for selection effects?

__________ is a simple study that uses a separate group of participants that is generally completed before conducting the study of primary interest in order to confirm the effectiveness of a manipulation.

____________ is an extra dependent variable that can be used to help researchers quantify how well an experimental manipulation worked