An experiment in which extraneous variables are controlled is said to be
a. internally reliable
b. internally valid
c. externally valid
d. externally reliable
b
You might also like to view...
Between or among brain-imaging techniques to reveal structural abnormalities only, which provides the highest- quality images without radiation?
a. CT b. Computerized Axial Tomography c. MRI d. PET
The analysis in Chapter 3 of four types of death-related concerns commonly found in individuals in our society demonstrates that
a. all humans are anxious about death b. there is great variation in human attitudes toward death c. death-related attitudes cannot be influenced by human beings d. the distinction between "fear" and "anxiety" is prominent in death-related research e. all of these concerns essentially involve the same thing
Which of the following statement is an example of two-tailed hypothesis?
A. Vitamin C makes people unhappy. B. Vitamin C improves people's mood. C. Vitamin C changes people's mood. D. Vitamin C has no impact on people's mood.
Certain neurotransmitters that exert inhibiting influences on impulsive thoughts and acts during the day are less plentiful during REM dreaming. They are _____ and _____
a) dopamine; acetylcholine. b) endocannabinoid; endorphine. c) adrenaline; cortisol d) serotonin; norephinephrine