A researcher desires to assess infant state using observers. Which of the following issues
should the researcher be most concerned about?
A) The validity of the methods; studies using direct behavior observations to judge infant
state have questionable validity.
B) It is very difficult to train people to conduct such behavioral observations.
C) It is difficult to determine which infant behaviors are tied to infant state change.
D) External validity; it may be difficult to obtain a good sampling of infant state because the
parents may not allow the observers to record the infant's behavior over long periods of
time.
D
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The mayor of a city wants to know the number of new cases of a disorder over the past year. The mayor should ask an epidemiologist for the __________ of the disorder.
A. prevalence rate B. incidence rate C. point prevalence D. acute occurrence
To what extent are nonshared environments important in accounting for similarities and differences in temperament and personality?
What will be an ideal response?
Amy is shown 6 white wooden beads and 10 green wooden beads. She is asked if
there are more green beads or more wooden beads. This would be a test of (a) class inclusion (b) conservation of number (c) object permanence (d) conservation of mass (e) conservation of beads
Medical knowledge has led to methods that genuinely help mothers and babies only during the past ____
a. 200 years b. 100 years c. 50 years d. 10 years