Developed countries make up about __________ of the world's population, whereas developing countries make up __________.
A. 20%, 80%
B. 30%, 70%
C. 40%, 60%
D. 50%, 50%
Answer: A
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Dr. Arriaga works at a university and tries to improve theories that predict helping behavior. Which type of researcher is she?
A. basic B. applied C. observational D. archival
According to Siegler's model of strategy choice,
A) before the age of 9 or 10, children fail to use even basic strategies efficiently. B) speed does not play a central role in children's decisions about strategy use. C) children often discover faster, more accurate strategies by using more time-consuming techniques. D) children consistently use new, more adaptive strategies as soon as they discover them.
Compared to a mentally healthy person, a person with dependent personality disorder typically displays __________.
A. lower neuroticism, higher extraversion, and lower agreeableness B. higher openness to experience, lower agreeableness, and higher conscientiousness C. higher neuroticism, lower extraversion, and higher agreeableness D. higher openness to experience, higher agreeableness, and higher extraversion
Sound waves are simply __________.
A. the vibration of the molecules in the air surrounding us B. the impact of acoustrons in the air C. a form of electronic radiation D. the result of emitted photons from a source