Again this so confusing to me. Hope you can help me to understand. Thanks.
Differentiate between field studies, quasi-expermental, and randomized experiments in human services research. Describe each research method and explain how it contsibates to the understanding of human services.
The differences start out with being able to understand each method on it's own.
1. Field Studies:
Field studies are those most often used in the field of social sciences (education, human development, etc.). Outcomes are observed in natural settings rather than a laboratory setting. A field experiment applies the scientific method, but in a natural setting. It allows the scientist to observe the interventions within real world contexts. Clinical trials of pharmaceuticals is an example of a field study. There are however draw backs to filed studies. These mainly consist of :
* Fairness of randomization (e.g. in 'negative income tax' experiments communities may lobby for their community to get a cash transfer so the assignment is not purely random)
* Contamination of the randomization
* General equilibrium and "scaling-up"
* Difficulty of replicability (field experiments often require special access or permission, or technical detail-- e.g., the instructions for precisely how to replicate a field experiment are rarely if ever available in economics)
* Limits on ability to obtain informed consent of participants
How to differentiate between quasi-experimental and randomized experiments in human services research studies. Discusses each method and how it helps to understand the area of human services.