Exam 2: Psychology As a Science

Outline a study designed to test a new medication for treating depression. Be sure to specify your study population, identify independent and dependent variables, identify experimental and control groups, and explain how you will know if the medication is effective.

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Question 1

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Answers will vary, but the study should be a randomized, double-blind, placebo controlled trial.
In one possible study, participants will be adults with a diagnosis of depression who are not currently taking any other medications or participating in therapy. The independent variable will be treatment level (medication vs. placebo) and the dependent variable will be score on a depression measure. Participants will be randomly assigned to the experimental condition (getting medication) or the control condition (getting a placebo). The study will be double-blind, meaning that neither the participants nor the research team will know who is getting the real medication and who is getting the placebo. Participants will complete the depression measure before beginning treatment and again after three months. Change in depression scores from pre-treatment to post-treatment will be compared for the placebo and medication groups. If the medication works as expected, there will be a statistically significant difference between the experimental and control groups, with a larger drop in depression symptoms for the experimental group.

Which correlation coefficient represents the weakest correlation between two variables?

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Question 2

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To learn more about the gaming habits of teenage boys, a professor randomly selected fifty boys from various high schools for a video game study. In this study, "all teenage boys" make up the

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Question 3

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A health researcher measured the weight of third-grade girls. In a group of ten girls, weights in pounds were 53, 55, 56, 57, 58, 59, 60, 62, 65, and 66. The range is _, and the sample _ appear to have clear outliers.

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Question 4

Compare the strengths and limitations of the following research study. Researchers tested a new 12-week cognitive therapy for post-traumatic stress disorder (PTSD), which they hope to begin using to treat war veterans. Recruitment flyers were posted at a rape crisis center offering free therapy. Any woman who wanted to participate was included in the study, regardless of her level of PTSD symptoms. Women who chose to participate were given the option to try the new therapy or to take an anti-anxiety medication for 12 weeks. Women who joined the study completed questionnaires about PTSD symptoms before they began the study and again after they completed treatment.

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Question 5

The Tuskegee syphilis study is famous because

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Question 6

Deception in psychological research

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Question 7

A professor wanted to learn more about the body image concerns of young teenage girls. She randomly selected 200 girls from local middle schools to complete her questionnaire. These girls were

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Question 8

A data set has a median value of 66, a mean value of 68, and a standard deviation of 18. Which value in the data set is most reasonably understood as an outlier?

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Question 9

Refer to the graph below. Scores for Group 1 differ most dramatically from scores for Group 2 in their

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Question 10

A given data set has a mean that is significantly greater than its median because the data set has

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Question 11

Correlations are most useful for

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Question 12

A psychologist has formulated the hypothesis that a lack of positive reinforcement by supervisors in the workplace leads to lower morale among workers, based on the observed correlation between these two phenomena. To support this hypothesis, the four-step process of strong inference would prescribe

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Question 13

Research has shown that social exclusion activates the same brain regions as physical pain. A researcher wants to test the hypothesis that over-the-counter pain relievers will also reduce the pain of social exclusion. She gives half of her participants ibuprofen and half a placebo, then has them play a game in which other players ignore them. Participants who take the ibuprofen are the _ and participants who take the placebo are the _.

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Question 14

If heavy snowfall in Alaska has a correlation of -0.78 with the consumption of ice cream and a correlation of +0.78 with the sale of boots, you can predict that for a snowy January in Alaska, the store will

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Question 15

Refer to the figure below. This scatterplot reveals a _______ correlation.

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Question 16

A research team is investigating the impact of stereotypes on performance. In one group, women read an article about why the structure of men's brains makes them better at math. In the second group, women read an article saying there are no biological differences in the mathematical abilities of men and women. Then all women in the study take a challenging math test. Researchers time the test and score the number of items women answered correctly. In this study, which of the following is the independent variable?

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Question 17

Use the following to answer questions : -The table shows the test scores of subjects in a controlled experiment, where a treatment undergoing testing was expected to boost the performance of subjects. What is the mode test score in the study?

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Question 18

A news organization wanted to predict who would win the next U.S. presidential election. They sent an opinion poll to every fiftieth person on a list of students enrolled at a nearby college. Which of the following is the study population?

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Question 19

The median is better than the mean as a measure of central tendency for which of the following distributions?

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Question 20

Showing 1 - 20 of 165

Outline a study designed to test a new medication for treating depression. Be sure to specify your study population, identify independent and dependent variables, identify experimental and control groups, and explain how you will know if the medication is effective.

Which correlation coefficient represents the weakest correlation between two variables?

To learn more about the gaming habits of teenage boys, a professor randomly selected fifty boys from various high schools for a video game study. In this study, "all teenage boys" make up the

A health researcher measured the weight of third-grade girls. In a group of ten girls, weights in pounds were 53, 55, 56, 57, 58, 59, 60, 62, 65, and 66. The range is _, and the sample _ appear to have clear outliers.

The Tuskegee syphilis study is famous because

Deception in psychological research

A professor wanted to learn more about the body image concerns of young teenage girls. She randomly selected 200 girls from local middle schools to complete her questionnaire. These girls were

A data set has a median value of 66, a mean value of 68, and a standard deviation of 18. Which value in the data set is most reasonably understood as an outlier?

Refer to the graph below. Scores for Group 1 differ most dramatically from scores for Group 2 in their

A given data set has a mean that is significantly greater than its median because the data set has

Correlations are most useful for

A psychologist has formulated the hypothesis that a lack of positive reinforcement by supervisors in the workplace leads to lower morale among workers, based on the observed correlation between these two phenomena. To support this hypothesis, the four-step process of strong inference would prescribe

If heavy snowfall in Alaska has a correlation of -0.78 with the consumption of ice cream and a correlation of +0.78 with the sale of boots, you can predict that for a snowy January in Alaska, the store will

Refer to the figure below. This scatterplot reveals a _______ correlation.

Use the following to answer questions : -The table shows the test scores of subjects in a controlled experiment, where a treatment undergoing testing was expected to boost the performance of subjects. What is the mode test score in the study?

A news organization wanted to predict who would win the next U.S. presidential election. They sent an opinion poll to every fiftieth person on a list of students enrolled at a nearby college. Which of the following is the study population?

The median is better than the mean as a measure of central tendency for which of the following distributions?

Introduction: Principles of Psychology

The Neuroscience of Behavior

Genes, Environment, and Behavior

Developmental Psychology

Sensation and Perception

Consciousness

Learning

Memory

Language and Cognition

Intelligence

Motivation and the Regulation of Behavior

Emotions, Stress, and Health

Personality

Social Psychology

Clinical Psychology

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Exam 2: Psychology As a Science

Outline a study designed to test a new medication for treating depression. Be sure to specify your study population, identify independent and dependent variables, identify experimental and control groups, and explain how you will know if the medication is effective.

Which correlation coefficient represents the weakest correlation between two variables?

To learn more about the gaming habits of teenage boys, a professor randomly selected fifty boys from various high schools for a video game study. In this study, "all teenage boys" make up the

A health researcher measured the weight of third-grade girls. In a group of ten girls, weights in pounds were 53, 55, 56, 57, 58, 59, 60, 62, 65, and 66. The range is _______, and the sample _______ appear to have clear outliers.

The Tuskegee syphilis study is famous because

Deception in psychological research

A professor wanted to learn more about the body image concerns of young teenage girls. She randomly selected 200 girls from local middle schools to complete her questionnaire. These girls were

A data set has a median value of 66, a mean value of 68, and a standard deviation of 18. Which value in the data set is most reasonably understood as an outlier?

Refer to the graph below. Scores for Group 1 differ most dramatically from scores for Group 2 in their

A given data set has a mean that is significantly greater than its median because the data set has

Correlations are most useful for

If heavy snowfall in Alaska has a correlation of -0.78 with the consumption of ice cream and a correlation of +0.78 with the sale of boots, you can predict that for a snowy January in Alaska, the store will

Refer to the figure below. This scatterplot reveals a _______ correlation.

Use the following to answer questions : -The table shows the test scores of subjects in a controlled experiment, where a treatment undergoing testing was expected to boost the performance of subjects. What is the mode test score in the study?

A news organization wanted to predict who would win the next U.S. presidential election. They sent an opinion poll to every fiftieth person on a list of students enrolled at a nearby college. Which of the following is the study population?

The median is better than the mean as a measure of central tendency for which of the following distributions?

Introduction: Principles of Psychology

The Neuroscience of Behavior

Genes, Environment, and Behavior

Developmental Psychology

Sensation and Perception

Consciousness

Learning

Memory

Language and Cognition

Intelligence

Motivation and the Regulation of Behavior

Emotions, Stress, and Health

Personality

Social Psychology

Clinical Psychology

Filters

A health researcher measured the weight of third-grade girls. In a group of ten girls, weights in pounds were 53, 55, 56, 57, 58, 59, 60, 62, 65, and 66. The range is _, and the sample _ appear to have clear outliers.