Pre-experimental designs produce the greatest threat to internal and external validity because it provides
a. either no control group or no way to equate the groups used
b. a control group through randomization
c. an equivalent-groups design
d. none of the above
Question 2
It is generally inappropriate to generalize the results of a study to a population when the subjects are NOT
randomly selected from the population because
a. the number of subjects in the study is too small
b. there is likely experimenter bias
c. there is little assurance that the subjects are an adequate representation of the population
d. there is little assurance that the data collected from the subjects is reliable
A coronary artery bypass graft (CABG) is a procedure to bypass a blocked coronary artery. The proced
The brain. (a) Superior (top) view. (b) Sagittal view of a sectioned brain to reveal internal featur
Internal anatomy of a turtle
External intercostals
The major internal features of a neuron.
The development of the internal ducts of the male and female reproductive systems from the Wolffian ...