Research Methods Final AHHHHH
The American Psychological Association's ethical guidelines have principles and standards.
5; 10
Which of the following studies would probably require written informed consent?
A confidential study examining income level and voting behavior
Which of the following is NOT possible?
A measure is valid but not reliable.
Establishing construct validity would probably be most important for which of the following?
A measure of spirituality
When using correlation coefficients to evaluate reliability, which of the following is undesirable?
A negative correlation coefficient
RESEARCH STUDY 13.2: Dr. LaGuardia is a cognitive neuroscientist who is interested in the effect of brain concussions on the ability to recognize faces. He conducts a quasi-experimental study in which he examines football players before and after the regular season using the Benton Facial Recognition Test (a published, widely used measure of one's ability to recognize faces) to compare those who received concussions to those who did not. He finds that players who had concussions during the regular season performed worse on the Benton Facial Recognition Test than did players who did not experience concussions.In interrogating the construct validity of Dr. LaGuardia's study, which of the following statements is accurate?
Because Dr. LaGuardia's participants actually experienced concussions, his independent variable appears to have construct validity.
In looking at a scatterplot of interrater reliability, why would a researcher want to see all the dots close to the line of agreement?
Because it indicates that the researcher's two research assistants/raters are making similar measurements
RESEARCH STUDY 3.2: Dr. Ramon makes the following claim: "Watching television leads people to spend less time communicating with their spouses, study says." Dr. LaSalle makes the claim: "Research shows that making more money correlates with spending less time talking with your spouse."Which type of claim is Dr. Ramon making?
Causal claim
RESEARCH STUDY 13.1: Dr. Fletcher is interested in whether joining a fraternity/sorority causes people to become more concerned about their attractiveness and appearance. He recruits a group of 55 freshmen (25 males, 30 females) who are planning to go through fraternity/sorority recruitment on his campus. After they join, he gives them a measure of attractiveness concern/appearance concern (the Body Concern Scale).Suppose Dr. Fletcher was concerned that students who choose to join fraternities/sororities are more concerned with their appearance overall. How could he test whether this type of selection threat exists?
Compare baseline levels of appearance concerns in fraternity/sorority students versus the average college student.
Dr. Alfonse, a developmental psychologist, conducts a study to determine whether children prefer books with drawn illustrations or with photographs. A group of 30 preschoolers are shown two copies of a book (Ferdinand the Bull) at the same time. Although the story is the same, one book is illustrated with drawings and the other is illustrated with photos. Students are then asked to indicate which book they prefer. This is an example of which of the following designs?
Concurrent-measures design
To evaluate how well a study supports a frequency claim, you need to focus most on evaluating which of the following validities?
Construct validity and external validity
All of the following are true of institutional review boards (IRBs) in the United States EXCEPT:
IRBs must have a psychologist as a member.
Generally, what is the main priority for experimental studies?
Internal validity
RESEARCH STUDY 10.1: Dr. Lonsbary is a cognitive psychologist who is curious about how mood affects memory. She recruited 60 high school students and divided them into three groups. Group A listened to a 5-minute piece of music intended to make them feel happy ("Happy" by Pharrell). Group B listened to a 5-minute piece of music intended to make them feel sad (a song titled "Home Is Such a Lonely Place" by Blink-182). Group C listened to no music and instead was asked to sit quietly for 5 minutes (thought to make them feel neutral).When a participant would come to her laboratory, Dr. Lonsbary would greet the participant and then ask him or her to roll a six-sided die. Participants who rolled a 1 or 2 were assigned to Group A. Participants who rolled a 3 or 4 were assigned to Group B. Participants who rolled a 5 or 6 were assigned to Group C. The participants were then given an unlabeled CD to listen to based on their group assignment. The CD contained either the song selection or 5 minutes of silence. They were then escorted into a different room, where they were greeted by a research assistant who conducted the experiment. The research assistant sat the participants in front of a computer screen and told them that a list of 25 words would be displayed on the screen. They were instructed to listen to the CD with headphones while trying to memorize the list of words. All participants were given the same list of 25 common words to remember (e.g., desk, gray, plane, car, mask).When 5 minutes had passed, the screen displayed a question asking them whether they felt happy, sad, or neutral. After the participant responded, a new screen was displayed asking them to type in all the words they could remember from the list of 25 words. All participants were given 3 minutes to type the words they remembered. Afterward, the participant was thanked and dismissed. In response to the mood question, a majority of Group A participants said they were happy, a majority of Group B participants said they were sad, and a majority of Group C participants said they were neutral in their mood. Dr. Lonsbary found the following results in response to the number of words remembered. Group A (Happy) Group B(Sad) Group C(Neutral) Number of Words Remembered16149 Groups A and B vs. Group CStatistically significant differenced = .36Group A vs. Group CStatistically significant differenced = .30Group B vs. Group CStatistically significant differenced = .41Group A vs. Group BNo statistically significant differenced = .09 Prior to conducting the current study, Dr. Lonsbary asked her research assistant to use the same mood manipulation with a sample of 30 college students to determine if people's moods really did change after listening to the music. This preliminary study is known as a _________ study.
Pilot
How does research overcome the problem of confounds?
Research systematically compares multiple conditions.
The aim of the Tuskegee Study was to examine which disease?
Syphilis
RESEARCH STUDY 4.1: Dr. Kushner is planning on conducting a study next semester. He is curious as to whether sleep deprivation is associated with poorer cognitive performance. For example, if you sleep poorly the night before a big exam, will you do worse? Dr. Kushner is especially curious about selective sleep deprivation, where people are kept from entering REM (rapid eye movement) sleep. Using an electroencephalograph (EEG) to monitor brain waves, he plans to let participants sleep until they enter REM sleep and then wake them. After the participants are awake for one minute, Dr. Kushner plans to let them return to sleep. As they enter REM sleep again, he will wake them again and follow the same procedure. He plans to do this through the entire eight-hour sleep session. The following morning, participants will be asked to take a sample SAT test.Dr. Kushner's decision about the type of participants to recruit should be informed by which of the following principles of the Belmont Report?
The principle of justice
In which of the following ways are correlational designs similar to quasi-experimental designs?
They both suffer from possible threats to internal validity.
In the study depicted in the figure above, why might researchers have measured blood pressure twice?
To make sure the two groups were equal before the manipulation
RESEARCH STUDY 10.1: Dr. Lonsbary is a cognitive psychologist who is curious about how mood affects memory. She recruited 60 high school students and divided them into three groups. Group A listened to a 5-minute piece of music intended to make them feel happy ("Happy" by Pharrell). Group B listened to a 5-minute piece of music intended to make them feel sad (a song titled "Home Is Such a Lonely Place" by Blink-182). Group C listened to no music and instead was asked to sit quietly for 5 minutes (thought to make them feel neutral).When a participant would come to her laboratory, Dr. Lonsbary would greet the participant and then ask him or her to roll a six-sided die. Participants who rolled a 1 or 2 were assigned to Group A. Participants who rolled a 3 or 4 were assigned to Group B. Participants who rolled a 5 or 6 were assigned to Group C. The participants were then given an unlabeled CD to listen to based on their group assignment. The CD contained either the song selection or 5 minutes of silence. They were then escorted into a different room, where they were greeted by a research assistant who conducted the experiment. The research assistant sat the participants in front of a computer screen and told them that a list of 25 words would be displayed on the screen. They were instructed to listen to the CD with headphones while trying to memorize the list of words. All participants were given the same list of 25 common words to remember (e.g., desk, gray, plane, car, mask).When 5 minutes had passed, the screen displayed a question asking them whether they felt happy, sad, or neutral. After the participant responded, a new screen was displayed asking them to type in all the words they could remember from the list of 25 words. All participants were given 3 minutes to type the words they remembered. Afterward, the participant was thanked and dismissed. In response to the mood question, a majority of Group A participants said they were happy, a majority of Group B participants said they were sad, and a majority of Group C participants said they were neutral in their mood. Dr. Lonsbary found the following results in response to the number of words remembered. Group A (Happy) Group B(Sad) Group C(Neutral) Number of Words Remembered16149 Groups A and B vs. Group CStatistically significant differenced = .36Group A vs. Group CStatistically significant differenced = .30Group B vs. Group CStatistically significant differenced = .41Group A vs. Group BNo statistically significant differenced = .09 Prior to conducting the current study, Dr. Lonsbary asked her research assistant to use the same mood manipulation with a sample of 30 college students to determine if people's moods really did change after listening to the music. This preliminary study is known as a _________ study.
pilot
The principle of justice calls for a balance between and .
the kind of people who participate in research; the kind of people who benefit from it
Ethical decision making done by researchers can change in response to all of the following EXCEPT:
the possibility of additional grant funding.
RESEARCH STUDY 3.3: Anton and his friends are discussing a study he read about in his developmental psychology class. In the study, the researcher made the claim that most middle school students who are bullied have low self-esteem. Clarissa questions the study, saying, "I am not sure that I am convinced. I am not sure you can really measure being bullied." Quinn also questions the study, saying, "Which middle school students did they study? I am curious if they included both private and public school students." Manish also is curious about the study, asking, "I wonder how strong the relationship is between bullying and self-esteem. Could you predict one from the other?"Quinn's concern is addressing which of the following?
the study's external validity
RESEARCH STUDY 3.3: Anton and his friends are discussing a study he read about in his developmental psychology class. In the study, the researcher made the claim that most middle school students who are bullied have low self-esteem. Clarissa questions the study, saying, "I am not sure that I am convinced. I am not sure you can really measure being bullied." Quinn also questions the study, saying, "Which middle school students did they study? I am curious if they included both private and public school students." Manish also is curious about the study, asking, "I wonder how strong the relationship is between bullying and self-esteem. Could you predict one from the other?"Manish's concern is addressing which of the following?
the study's statistical validity
Research studies are superior to personal experience because:
they include at least one comparison group.
