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week 8 study design

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Subject: Performing Arts
Due on: 07/15/2014
Posted On: 07/15/2014 03:43 AM

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Please respond to the following questions either by writing the design name or by describing the design using standard notation (X = program, O=observation, R= random assignment). For each design, please discuss all threats to internal validity.

1. a. Design: Single group post-test only

b. Internal validity threats:

2. a. Design: (R) O1 X O2

(R) O1 O2

b. Internal validity threats:

3. a. Design: Pretest-posttest design with experimental and comparison group

b. Internal validity threats:

4. a. Design: O X O

b. Internal validity threats:

5. a. Design: Single group with three pretests and four posttests

b. Internal validity threats:
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Preview: of xxxxx and xxxxxxxx only when xxxxxxxxxx delimit other xxxxx of xxxxx xxxxxx In xxxx cases, this xxxxxx also serves xxxxxxxxxxx research xxxxx x Design: xxx O1 X xx Randomized experimental xxx posttest xxxxxxxx xx O2Randomized xxx posttest control xxxxxx Internal validity xxxxxxxxxx the xxxxxxxxxx xxxxxx occurs xxxx a great xxxxxx of time, xxxxxxx and xxxxxxxxxx xxx post xxxxxxxxxxx threats (Ohlund xxxxx Yu, 2009, x 5) xxxxxxx xxxxxxx events xxx influence the xxxxxxxxxxxx in each xxxxxx these xxxxxxxxxx xxx do xx in disproportionate xxxx (p 5) xxxxxxxxx and xxxxxxxxx xxxxx will xxxx increase over xxx duration of x study xx xxxxxxx for xxxxxxx and maturation, xxxxxx & Yu xxxxxx suggest xxxx xxxxxxxxxxx should xxxxxxxxxxxx the experimental xxx control groups xx the xxxx xxxx or xxxxxxx the experimental/observational xxxxx at random xxxxxxxxx (p xx xxxxxxxxxxx could.....
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