Internal validity in an experiment is affected by:
a. participant assignment to groups.
b. representatives of the sample.
c. participant selection procedures.
d. external validity.
Question 2
To select participants from a pool of potential participant, you should not:
a. use a computerized random number generator.
b. draw names from a hat.
c. select names from a list without trying to pay attention to who the individuals are.
d. use a random number table.
