Factorial Study Design

Can you describe factorial study design? What is an example of this?

Time Series Study Design

Can you describe time series study design? What is an example of this?

An Extraneous Variable

What is a extraneous variable? Can you give me an example of this?

Retrospective vs Prospective Study Design

Can you describe retrospective versus prospective study designs? What are examples of this?

Describe target population and which type of validity you would probably find this?

Internal validity would be results of the study that are evidenced based on reality and not on supposition. External is more broad and can be generalized. An example of internal validity would be a research study with a 100 group sample of diabetics that trialed a new diabetic sock and found it to be comfortable with minimal skin excoriation during frequent walking. If they participants were broad in age, with the same type of Diabetes, on the same medication,w with the same moderate to active lifestyle, then you draw a positive correlation from the study and the internal validity would be true. If you took that same study and broadened the age group with a mix of type 1 and type 2 Diabet... click for more