PSY550 MIdterm exam - Feb 2018

Asked by bighero
Dated: 12th Jun'18 12:00 PM
Bounty offered: $35.00

1.

Researcher Sandy Beach found a correlation coefficient of +2.3 between variables X and Y. She is thrilled because that correlation is “like, way high.” She also feels that this answer “proves that X is like, causing Y.” What are three problems with Sandy’s conclusions

2. Compare and contrast the following terms: (a) test-retest reliability with inter-rater reliability, (b) content validity with both predictive validity and construct validity, and (c) internal validity with external validity.

3. When designing survey questions, how would you control for each of the following response styles: (a) willingness to answer, (b) position preference, and (c) yea- or nay-saying?

4.
For each of the research topics listed below, indicate the type of nonexperimental approach that would be most useful and explain why.
1.Pushing ahead in line
2.Daydreaming
3.Locating the most popular painting in an art gallery
4.Studiousness in college students
5.Determining whether a particular patient has improved with psychotherapy.

5.Contrast probability and nonprobability sampling methods; generally speaking, which methods are most useful?

6.Contrast experimental with quasi-experimental methods; generally speaking, which methods are most useful?

7.When is it appropriate for a researcher to use deception in a study? When is it not appropriate? How can the negative effects of deception be minimized?

8.Define and describe the six steps of the scientific method. Give an example of each step.

9.
Use Stevens’ model of measurement scales to answer these questions:
1.What type of scale is used when the variable is social class? Explain.
2.What type of scale is used when the variable studied is a Top 40 list of popular songs? Explain.
3.What type of scale is used when the variable studied is intelligence scores (for example, on the Stanford-Binet-R)? Explain.
4.What type of scale is used when the variables studied are low and normal birth weights of newborns? Explain.

10.
List the main sections (and subsections) of a research report.

PSY550 MIdterm exam - Feb 2018
Answered by bighero
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Dated: 12th Jun'18 12:00 PM
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attachments

Question_1.doc (25 KB)
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first     Sandys   is that     no       to   assumption of     a       hence   could be     Y       The   problem is     for    
Question_2.doc (26.5 KB)
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seen     that   taken by     or       instrument   one item     as       conditions   the other     inter-rater       for   of the     agreement       in   decisions on
Question_3.doc (24 KB)
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to     provided   in the     the       Jr   adduces that     where       not   in a     distinguishing       in   survey, there  
Question_4.doc (29 KB)
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and     In   the most     in       the   research could     for       a   between two     the       in   students, a     useful       of   on the     are      
Question_5.doc (27 KB)
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is     useful   any research     due       that   selection typically     avoiding       as   that all     well       researcher   able to     as      
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the     considered   Generally speaking,     are       is   to the     they       in   settings, where     are       being   implies that    
Question_8.doc (26.5 KB)
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a     instance   increasing deaths     with       related   the kind     they       step   experimentation when     out       test   hypothesis The     is       data   where the     recorded  
Question_7_.doc (28 KB)
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applied,     value   should also     only       are   not to     According       McCann   deception should     administered       of   such as     and       not
Question_10.doc (27.5 KB)
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in     that   problem statement     Literature       explores   studies related     research       section   the methods     data       Results-   section analyses     of
Question_9.doc (27 KB)
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useful     study   normal birth     to       the   scale provides     of       variables   DeVellis, R     Scale       applications   26) Sage     D       G   , Cairney,     Health       practical   to their