According to Piaget, what is responsible for cognitive development?
A. Changes in cognitive structures
B. Changes in function
C. Changes in assimilation processes
D. Changes in behavior
Answer: A
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When conducting hypothesis tests for two sample means, the test statistic is
a. alpha. b. the difference in sample means. c. the degrees of freedom. d. the difference in the population means.
Marx believed that individual merit was the basis for the stratification system and that the masses exert tremendous influence on government policies and action
a. true b. false
In the Czech Republic, when communism collapsed the economic situation
A) had little or no effect on marital stability. B) led to increased marital freedom and marital stability. C) made spouses more irritable and increased fighting and drinking. D) led to a big increase in personal and family income.
Until recently physicians have "been the voice of authority.". Physician authority has been undermined by a number of factors. Which one is not one of those factors?
a. Other stakeholders have taken a visible and more active role in deciding the diagnosis and course of treatment. b. Pharmaceutical companies market drugs directly to consumers. c. Patients are overwhelmed with information, making them apathetic patients. d. Insurance companies often set the terms of care and treatment.