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A researcher is investigating the effects of life-review group therapy on depression among elderly residents of assisted care facilities

Psychology

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A researcher is investigating the effects of life-review group therapy on depression among elderly residents of assisted care facilities. The researcher identifies 2 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.

This is not a longitudinal designed study (which is usually non-experimental); this study is an experimental study as it has a manipulated IV, and a treatment and control group. 

It is a specific type of experimental study. What type is it?