When Katie's grandpa shows her a group of ten hogs and three cattle and asks her, "Are there more hogs or more animals?" Katie responds by saying, "There are more animals, Grandpa." One year earlier, she would have said that there were more hogs. According to Piaget's theory, it is most likely that Katie is currently in which stage?
A. Sensorimotor
B. Preoperational
C. Concrete operational
D. Postconventional
Answer: C
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According to the developmental pathways model,
a. psychological disorders are best characterized as diseases. b. once a person's behavior deviates from the normal path, it will not return to normal. c. normal genes and normal environments tend to push development along a normal course. d. with age, individuals whose early development is maladaptive will almost always show deviation back to the norm.
Which of the following is true about reliability?
A. Through statistical analyses, a test can be determined to be either reliable or not. B. A test does not need reliability if it has good face validity. C. If a test has reliability, it also has validity. D. A test's reliability is shown by how well the test items correlate with each other.
A researcher studies language development by selecting a sample of two-year-old children and giving them a language skill test. Each year for the next two years, the children are brought back and tested again. The researcher plans to compare the children's scores at age two, age three, and age four. This study is an example of a(n) ____
a. time-series design b. interrupted time-series design c. cross-sectional developmental design d. longitudinal developmental design
George's younger brother is diagnosed at birth with "trisomy-21." Another term for this condition is:
a. Klinefelter's syndrome b. Supermale syndrome c. Fragile X syndrome d. Down syndrome