What is the substance called that coats the lungs and keeps the air sacs in the lungs from collapsing?
A. pulmonary oil
B. mucus
C. surfactant
D. liquivent
Answer: C
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Dr. Schultze conducts research on the effects of a new drug on obsessive-compulsive disorder. In his study, neither Schultze nor the participants knows who is receiving the active drug and who is receiving the placebo. This example describes
a. random sampling. b. a double-blind study. c. a single-blind study. d. a control factor. e. a social desirability bias.
Josh is using a web-based study system in psychology that creates a personalized study plan for him as well as providing him with videos, animations, and learning modules that will help him master course content. This study system also has pretests and posttests to help Josh monitor his learning progress. This web-based study system is called
a. PsycINFO. b. PsycPORT. c. StudyTECH. d. CengageNOW.
Two measured variables are to _____ as one nonmanipulated independent variable and one measured variable are to _____
a. quasi-experimental method; correlational method b. correlational method; quasi-experimental method c. quasi-experimental method; experimental method d. experimental method; quasi-experimental method
If sentences with different emotional tones are presented to each ear, a. most participants will do a better job of identifying the emotional tone presented to the right ear. b. most participants will do a better job of identifying the emotional tone presented to the left ear
c. most participants will be unable to identify either emotional tone. d. positive emotional tones will be identified best when presented to the left ear.