What is the greatest threat to internal validity in this type of design
(Status: Writer Assigned) Research design types/Design methods and threats (2 pages, 0 slides)
Research design types
PT. 1 (200-250 words) A researcher is interested in studying the effects of a music therapy program on depression in nursing home residents. The IV is the music therapy program (2 sessions per week for 6 weeks) and the DV is scores on three different measures of depression. If you were conducting this research, which of the following designs would you choose? Explain why and how you would carry this out.
• one-group post-test only design
• one-group pretest-posttest design
• non-equivalent control group design
• non-equivalent pretest-posttest design
• interrupted time series design
• control series design
Design methods and threats
Pt. 2 (200-250 words) A researcher is investigating the effects of life review group therapy on depression among elderly residents of assisted care facilities. The researcher identifies two facilities and recruits volunteer participants. In one of the facilities, life review therapy is conducted for 8 weeks. In the other facility, a no-treatment support group takes place for 8 weeks. Depression is measured after the program is administered.
What type of research design is this? What is the greatest threat to internal validity in this type of design? Explain.
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