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February 28, 2015

Homework Help: Program planning and evaluation

Posted by me on Sunday, May 1, 2011 at 7:56pm.

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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