In an experiment, it is essential that
A) the group sizes are equal.
B) the experimental and control groups are comparable at the start of the study.
C) all participants are given a pretest.
D) the groups are equal after the manipulation.
Question 2
Which of the following is essential for a successful control-group design?
A) that the experimental and control groups be comparable at the start of the study
B) that participants be randomly selected from a general population
C) that at least three conditions are manipulated
D) that there be an equal number of male and female participants
Demonstration of equal segregation within one meiocyte in the yeast S. cerevisiae
Faces in experiment
Pavlov’s Salivary Conditioning Experiment (2 of 2)
In a Millikan experiment, a 6.89E-14 kg charged oil droplet is suspended in the electric field ...
Summary of the Hershey–Chase experiment demonstrating that DNA, and not protein
The Hershey-Chase experiment