quantatative research homework

  

1.Jackson (2012) even-numbered Chapter Exercises (p. 244).
· 
2. You read in a health magazine about a study
in which a new therapy technique for depression was examined. A group of
depressed individuals volunteered to participate in the study, which lasted 9
months. There were 50 subjects at the beginning of the study and 29 at the end of
the 9 months. The researchers claimed that of those who completed the program,
85%improved. What possible confounds can you identify in this study?
· 
4. What are internal validity and external
validity, and why are they so important to researchers?
· 
6. What are the similarities and differences
between within-subjects and matched-subjects
2.What is the purpose of conducting an experiment? How does
an experimental design accomplish its purpose?
3.What are the advantages and disadvantages of an
experimental design in a business study?
4.What is more important in an experimental study, designing
the study in order to make strong internal validity claims or strong external
validity claims? Why?
5.In an experiment, what is a control? What is the purpose
of a control group? Of single or multiple comparison groups?
6.What are confounds? Give an example of a design that has
three confounds. Describe three ways to alter the design to address these
confounds and explain the advantages and disadvantages of each.
7.What does “cause” mean and why is it an important concept
in research? How are correlation and causation related?
8.You are a researcher interested in addressing the
question: does smiling cause mood to rise (i.e., become more positive)? Sketch
between-participants, within-participants, and matched-participants designs
that address this question and discuss the advantages and disadvantages of each
to yielding data that help you answer the question. Describe and discuss each
design in 4-5 sentences.
Support your paper with a minimum of 5 resources. In
addition to these specified resources, other appropriate scholarly resources,
including older articles, may be included.
Length: 5-7 pages not including title and reference pages
References: Minimum of 5 scholarly resources.
Your paper should demonstrate thoughtful consideration of
the ideas and concepts that are presented in the course and provide new
thoughts and insights relating directly to this topic. Your paper should
reflect scholarly writing and current APA standards.

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