Demand characteristics can threaten internal validity because the results ____
a. may not generalize to situations where demand characteristics are different
b. may be specific to the experimenter who has the expectations
c. can be explained by reactivity instead of the treatment conditions
d. correlate with those that threaten external validity
c
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Across the lifespan, which period is the only time when girls are, on average, taller than boys?
A. by age 8 B. by age 11 C. by age 13 D. by age 15
When given simple enough stories, even preschoolers distinguish between moral rules and ____________, which refer(s) to rules, authority, and social customs
a. second-order false-belief reasoning b. racial constancy c. social-conventional rules d. distributive justice
What are grammatical transformations?
a. Ways of expanding on a young child's language b. Rules for two-word sentences c. Rules for polite speech d. Rules for word order and for adding modifiers or inflections to convey meaning
Parvocellular cells respond strongly to moving stimuli and large overall patterns
a. True b. False Indicate whether the statement is true or false