Based on studies of infants and children in orphanages, Rene Spitz concluded which of the following,
a. Responsiveness of the caregiver to infants' cries and other gestures of communication are crucial to infant development.
b. Infants and children in orphanages who were provided scheduled care showed normal development.
c. Many of the infants and children in orphanages who did not get responsive care became overweight.
d. There are few differences between infants and children raised by their biological parents and their counterparts in orphanages.
A
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A z score transforms a raw score into:
a. Percent correct b. A ratio of right to wrong answers c. A range d. Standard deviation units
Eighty-three percent of the students in a class can name five countries in South America. Such a statement is probably based on the results of:
a) a diagnostic test. b) a criterion-referenced achievement test. c) an aptitude test. d) a norm-referenced achievement test.
Order and carryover influences may be neutralized via:
A) counterbalancing B) randomization C) regression D) blinding E) none of the above
Statistics in educational research should be
a. chosen before the research question is chosen. b. considered only a research tool. c. preferably complex. d. the most important part of the research proposal.