Which of the Following Is True of Single-Subject Experimental Designs

Multiple Choice

Which of the following is true of single-subject experimental designs?

A) Different treatment phases need to be included in them to demonstrate change due to the independent variable.
B) These designs are cross-sectional in nature and involve collection of data at a single point of time.
C) They involve collection of single data points before and after interventions.
D) They produce findings which can be easily generalized to other individuals and situations.