KA 2: experimentation: experimental design: controls Flashcards
1
Q
what are control results used for?
A
comparison with the results of treatment groups
2
Q
what does a negative control provide
A
results in the absence of a treatment
3
Q
what is a positive control?
A
a treatment that is included to check that the system can detect a positive result when it occurs
4
Q
describe the use of placebos
A
can be included as a treatment without the presence of the independent variable being investigated
5
Q
what is the placebo effect?
A
a measurable change in the dependent variable as a result of a patient’s expectations, rather than changes in the independent variable
