A researcher develops a brief questionnaire measure of people's level of optimism. To determine whether his measure is a good one, he asks a sample of people to complete his questionnaire twice, separated by one month. At the second session, he also asks his participants to complete another measure of optimism—one that has been an accepted measure of optimism for many years. Using this procedure, the researcher is establishing the
A. independent variable of optimism.
B. precision and accuracy of his measure.
C. reliability and validity of his measure.
D. nomothetic and idiographic features of optimism.
C. reliability and validity of his measure.
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A decrease in nutrients and oxygen to the fetus, a weakening of the mother's immune system, and hormone imbalances in the placenta together can be caused by
a. maternal malnourishment. c. a mother being over the age of 40. b. maternal stress. d. multiple fetuses
During what age range are children typically in the stage of preoperational thought?
A) birth to 2 years B) 3 to 6 years C) 7 to 10 years D) 10 to 14 years
Tyra has phenylketonuria (PKU). Which statement is accurate?
A. Tyra must be on a specialized diet high in phenylalanine for her entire life. B. Phenylalanine in Tyra's diet helps to myelinate axons. C. Tyra can introduce phenylalanine into her diet as a child. D. Phenylketonuria results from a missing enzyme.
Yolanda has been successful in her career and relationships, but is disturbed by the nagging question, "Am I being true to myself?" Which type of therapy would most likely address this concern?
a) cognitive b) existential c) behavioral d) psychodynamic