Billy Bob is a participant in a study investigating the effectiveness of Ritalin in treating ADHD. Billy Bob has ADHD, but is in a group that received sugar pills instead of Ritalin. Billy Bob is in the __________ group
a) experimental
b) random
c) control
d) observational
c Explanation: Participants in the control group do not get the independent variable, which
in this case is Ritalin.
You might also like to view...
Echoic memories usually decay in about _____ second(s).
A) 1 B) 5 C) 30 D) 60
Frequently, school-age children on a baseball field will shout, "Think fast!" and immediately throw a baseball in the direction of a teammate. What is being tested is the teammate's
forearm strength. reaction time. team spirit. ability to field balls.
As part of the indoctrination process used by terrorist groups and cults, as soon as a person is a committed believer, the leader is most likely to ________
a. allow them more choices than before. b. encourage private doubts. c. encourage contact with family members. d. denigrate critical thinking.
A difference between dependent and independent variables is
a. dependent variables are manipulated by an experimenter. b. independent variables are manipulated by an experimenter. c. dependent variables only may be observed. d. independent variables only may be observed.