By controlling all extraneous variables and by randomly assigning people to different experimental conditions, an experimenter can achieve high
a. interjudge reliability.
b. generalizability.
c. replicability.
d. internal validity.
Question 2
Which of the following factors was NOT necessary to ensure the internal validity of the Latan and Darley seizure study described in the text? They
a. made sure their conditions varied on only the key variable.
b. made sure that the seizure overheard by participants was identical for everyone.
c. randomly assigned participants to groups or conditions.
d. asked participants about their knowledge of epilepsy before beginning the experiment.
Summary of greenhouse experimental design and results
Calcium consumption is essential for all people
People riding bikes in Netherlands
Experimental Treatment of a Prion Protein Infection
Early in the twentieth century, when malnutrition was common, companies such as this one advertised
Government in America: People, Politics, and Policy, AP