Answer to Question 1
The prospective research design has a stronger though logistically more costly and difficult strategy. Also known as a longitudinal design, it is a study in which research participants are evaluated from day one of the research project on certain variables and then tracked across a fixed time period from baseline.
Answer to Question 2
Those who adopt the sick role exhibit patterns of behavior referred to as illness behavior in which they evaluate symptoms, seek medical care, and ask for support from close others. Illness behavior is reinforced in this manner by those who find the additional attention, care, and relaxation of the demands of their normal duties rewarding.
Summary of greenhouse experimental design and results
Some organisms used as models in genetic research
Juvenile buzzard being weighed for research
Scientists do research in the laboratory and in the field
Modern house door design
Operations Research