If you are concerned with being able to generalize a result from one of your experiments to a larger population, then you are worried about
A) statistical conclusion validity.
B) construct validity.
C) internal validity.
D) external validity.
Question 2
You do an experiment in a mental institution to determine the effects of two types of therapy. All of the patients classified as having paranoid schizophrenia are used and you flip a coin to determine which type of therapy they will receive. You measure length of hospital stay for each group. Which alternative below is a control variable?
A) type of therapy
B) length of stay
C) classification of disorder
D) flipping a coin
Griffith's experiments that showed the transformation of bacteria by a “transfor
During confrontations with others, the mane makes the lion look larger.
Glaucoma. (a) A buildup of pressure within the eye cavities, often caused by a blockage of vessels t
The same star field photographed with (a) a ground-based telescope, which is subject to poor seeing
This graphic illustrates the original systems model of politics advanced by David Easton. Politics
Controlled Scientific Experiments Scientists use experimental research to test hypotheses