Using a convenience sample instead of a random sample of subjects is a threat to which kind of validity?
a. internal
b. external
c. construct
d. statistical
b
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Even without full visual acuity, newborns actively pay attention to certain types of stimulation in the environment.
Answer the following statement true (T) or false (F)
According to the discussion of problem-solving expertise in Chapter 11,
a. expertise is typically defined in terms of problem-solving speed, rather than problem-solving accuracy. b. in some fields, expertise is not strongly correlated with the number of years of experience. c. true experts can acquire their expertise without extensive practice because they truly seem to be "born" with their skills. d. experts tend to have an especially well-developed working memory for general information, not just in their area of expertise.
How do girls perceive menarche?
What will be an ideal response?
Researchers have found that the complete absence of the activity of the enzyme _______________ coupled with a ________________ showed some form of antisocial behavior in 85% of individuals studied in New Zealand
A. MAOA; history of maltreatment B. MAOA; high serotonin levels C. ANS; history of maltreatment D. ANS; high serotonin levels