Ravi is a participant in a cognitive experiment, but he does not know if he is in the experimental group or the control group. The researchers, however, are aware of the condition to which he has been assigned. The study in which Ravi is participating is called a(n)
A. double-blind study.
B. single-blind study.
C. survey.
D. interview.
Answer: B
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While researching cancer mortality rates for a school project, Diana notices that racial and ethnic minority groups have higher cancer mortality rates. What is the likely cause for these differences?
A. genetic factors B. lack of education C. lack of early detection and treatment D. inadequate access to healthy foods
Stephen LaBerge and his colleagues at the Stanford University Sleep Research Center were able to show that lucid dreams are real and that they occur
a. during NREM sleep. b. during REM sleep. c. only when people are sleep deprived and are experiencing REM rebound. d. most often in children and adolescents, but rarely in adults.
When it comes to control and adolescence:
a. fathers want to retain more control, despite the adolescent's efforts to take it. b. adolescent girls desire more control than adolescent boys. c. mothers want to retain more control, despite the adolescent's efforts to take it. d. adolescent boys desire more control than adolescent girls.
Currently, when do girls show signs of puberty as compared with their mothers?
a. Within the same time frame b. 1-2 years earlier than their mothers did c. 1-2 years later than their mothers did d. Approximately 5 years earlier