In a __________ study, the participants do not know if they are part of the control group or the experimental group. Only the experimenter knows who is in each group
a. placebo
b. single-blind
c. double-blind
d. triple-blind
b
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Who has just reached the current "age of viability" for a human?
a. Ben, who has survived 6 weeks past conception b. Hoss, who has survived 12 weeks past conception c. Joe, who has survived 17 weeks past conception d. Adam, who has survived 23 weeks past conception
Which of the following is true of sensory neurons?
A. They send information to the brain only. B. They all connect to the internal organs and muscles. C. They mostly extend to the internal organs and muscles; however, some connect to motor neurons in the spinal cord. D. They mostly send information to the brain; however, some connect to motor neurons in the spinal cord.
Humans excel at estimating:
A) frequency. B) probability. C) both frequency and probability. D) probability in childhood but frequency in adulthood.
Katrina wants to study the organizing effects of sex hormones on female brain development. To begin, Katrina needs to understand when the organizing effects of sex hormones occur, which is
A. at conception. B. around the time of birth. C. in the first year of infancy. D. in early adulthood.