What is one of the major difficulties assessing young infants?
a. Their states of arousal and motivation vary greatly from one hour or even minute to the next.
b. They often fall asleep during the assessment.
c. Their mothers generally do not like to be assessed.
d. The results have no meaning.
A. Infants' states of arousal and motivation vary greatly from one hour or even minute to the next, so an infant's developmental quotient in the testing session may simply reflect the state that he or she was in at the moment rather than more enduring and stable mental abilities.
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An individual operating on the reality principle seeks ____________
a) immediate gratification b) perfect accomplishments c) to reveal unconscious motivations d) rational means for obtaining gratification
Which statement concerning the genetic code is FALSE?
A. Zygotes consist of many genes. B. Genes consist of many DNA strands. C. DNA strands consist of many zygotes. D. Chromosomes consist of many genes.
Which of the following statements is true?
a. A scientist who is studying construct validity will be more concerned about what conceptual variable is actually being measured than will a scientist who is concerned with criterion validity. b. A scientist who is studying criterion validity will be more concerned with the conceptual variable being measured than will a scientist who is concerned with construct validity. c. Construct validity is normally used to make predictions about a behavior that will occur in the future. d. Criterion validity can be considered to be another form of face validity.
______ can cause developmental abnormalities in the developing embryo and fetus.
A. Polyyps B. Teratogens C. Natural killer cells D. Cytotoxicity