An educational psychologist is interested in comparing two educational techniques in a sample of preschool children. In part because she believes that one technique might be more effective than the other, children are randomly assigned to the two techniques so that every child has the same opportunity to be assigned to the more effective technique. Randomly assigning students to groups satisfies
which feature of ethical research?
A) external validity
B) beneficence
C) being just
D) respecting persons
C) being just
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All of Paulo and Geneva's children have moved away, started families, and begun working on their careers. According to the text, Paulo and Geneva's home is now a(n)
haven of quiet. empty nest. lonely cavern. house of mirrors.
The United States has experienced a(n) __________ in divorces over the past fifteen years, largely due to __________
A) increase; increases in family size B) increase; heightened economic stress C) decline; improved economic stability D) decline; a rise in the age at first marriage
Given that field experiments are high in external validity, why is it that social psychologists still rely on laboratory studies?
a. Laboratory studies are more psychologically realistic. b. Laboratory studies help to control for extraneous variables. c. Laboratory studies permit random assignment of participants. d. Laboratory studies are more reliable.
Myelination is completed:
a. Within the first trimester b. During the fetal stage c. Within the first 1–2 years after birth d. By late adolescence or beyond