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(solution) Hi, can you help me to answer this assignment? Thank you


Hi,

can you help me to answer this assignment? 

Thank you


Name and ID _________________________________________________

 

Assignment 2

 

1. Your book discusses 3 types of research methods: Descriptive, Correlational, and Experimental. Define the

 

goal of each type of method.

 

2. What 3 things are required for study to be an Experimental design (label and briefly define)?

 

3. Read the following short descriptions of research studies and answer the questions following each study. Each

 

study is separate so please do not return to an earlier study after you have moved on to a subsequent study.

 

The Memory Pill Study. Dr. Warner?s study at Miami University demonstrated that a new memory pill is related to

 

one?s short-term memory capability. The researcher had 100 adults complete a lengthy interview disguised as a

 

health check. As part of this interview, participants were given three lists of 20 items to remember and then asked

 

to immediately recall them. The words were all well-known objects, such as pen, brush and flower. Participants

 

were required to show up to receive the pill once a day for three weeks to ensure that they actually took the pills.

 

Although all participants thought they were taking a pill to reduce their blood pressure, fifty of them were

 

randomly assigned to actually take a sugar pill, and fifty took the aforementioned memory pill. After the threeweek period, all of the participants returned to complete a lengthy interview that was similar to the first one.

 

During this interview, they were again given the memory assessment with three different lists of 20 items to recall.

 

The researchers found that the group taking the memory pill had higher recall scores than the group taking the

 

sugar pill at the end of the study. Dr. Warner concluded that the memory pill was clearly associated with a larger

 

short-term memory capacity.

 

A. Did the study?s author conclude that the memory pill causes an increase in short-term memory

 

capacity? -Yes -No

 

B. What type of study was described? -Experiment -Correlational -Can?t be determined

 

C. What determined which group people were in?

 

-Characteristics of the participants determined group membership

 

-The experimenter determined group membership

 

-Can?t be determined

 

The Puzzle Study. Dr. Landau, a research scientist at the University of California, Berkeley, recently found that those

 

who play challenging puzzles are much less likely to later develop Alzheimer's disease. For the study, researchers

 

interviewed 165 healthy older people who were an average of 76 years old. They asked a variety of questions about

 

their lifestyle practices, and how frequently they engaged in cognitively challenging activities such as puzzles since

 

childhood. They also gave each person a battery of tests to determine whether they had Alzheimer's disease. They

 

found that adults who participated in more mind-stimulating activities, especially in their early and middle years,

 

were significantly less likely to have Alzheimer's disease and when they did have it, it was much less severe. The

 

elderly participants with the most puzzles and books under their belt had brains comparable to those of the

 

healthy controls who were fifty years younger. Dr. Landau concluded that a lifetime of cognitive activity is directly

 

linked to not developing Alzheimer's disease later in life.

 

A. Did the study?s author conclude that a lifetime of cognitive activity causes a decline in later developing

 

Alzheimer's disease? -Yes -No

 

B. What type of study was described? -Experiment - Correlational -Can?t be determined

 

C. What determined which group people were in?

 

-Characteristics of the participants determined group membership

 

-The experimenter determined group membership

 

-Can?t be determined

 

The Music Study. Dr. Hathaway at the University of Arizona recently conducted a study that showed that listening

 

to music while studying helps people better comprehend textbook material. The professor had all his students read

 

a long psychology section from their textbook with headphones on. He randomly chose thirty students to have

 

music playing in their headphones while thirty other students had nothing playing while they read. Students were

 

stopped after twenty minutes of reading and were given a set of 10 multiple choice questions that covered all types

 

of material mentioned in the text. The data were scored without knowledge of which condition the students were Name and ID _________________________________________________

 

in. He found that students in the music condition answered significantly more questions correctly than those

 

students that did not listen to music. Dr. Hathaway concluded that the presence of music while studying leads to

 

better comprehension and he started suggesting to his students that they may want to listen to music while they

 

prepare for exams.

 

A. Did the study?s author conclude that the presence of music while studying causes improvements in

 

comprehension? -Yes -No

 

B. What type of study was described? -Experiment - Correlational -Can?t be determined

 

C. What determined which group people were in?

 

-Characteristics of the participants determined group membership

 

-The experimenter determined group membership

 

-Can?t be determined

 

4. Read the following article retrieved from the web and answer the questions below. Trans fat lead to depression

 

Are you feeling down in the dumps about all that junk food you?ve been eating lately? Well, it

 

may literally be the junk food that is making you depressed.

 

By Amanda Gardner, Health Reporter, Associated Press

 

The results of a six-year study out of Spain has come to the conclusion that people who eat food high in trans fats

 

and saturated fats have an increased risk of depression. Trans fats are used in fried foods, shortening and all kinds

 

of processed foods.

 

?Participants who regularly consumed elevated levels of trans fats presented up to a 48 percent increase in the risk

 

of depression when they were compared to participants who did not consume these fats,? said Almudena SanchezVillegas, associate professor of preventive medicine at the University of Las Palmas de Gran Canaria.

 

Over the six years of the study, researchers survey over 12,000 people about their diet and lifestyle. At the start of

 

the study, nobody in the study was diagnosed with depression. However, by the end of the study, more than 600

 

people were suffering from the condition.

 

The opposite effect was found with foods such as fish, vegetable oils and olive oil. Those foods are associated with

 

a lower risk of depression.

 

The National Institute of Mental Health estimates that about 15 million Americans suffer from depression.

 

1. Was the message in the title a reasonable conclusion given the study presented? -Yes -No

 

2. If you answered ?Yes? to the previous question, please explain why. If you answered ?No? to the previous

 

question, please explain why not.

 

3. The conclusion drawn by the journalist is: -correlational -causal -descriptive

 

-can?t be determined

 

4. Which words or phrase that led you to the conclusion?

 

5. The primary study described what type: -correlational -causal -descriptive

 

-can?t be determined

 

6. Which words or phrase that led you to the conclusion?

 


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