Attention to people suffering from mental disorders varies greatly from one country to the next. As your book notes, there are approximately 200,000 mental health professionals serving 300 million people in the United States. In sub-Saharan Africa, however, there is only one psychologist for every ________ people.

Which of the following abilities develops in a U-shaped fashion?

a. perception of phonemic contrasts b. discrimination of varieties of human motion c. localization of sounds d. vision for fine detail

Which of the following statements is TRUE?

a. A test is a measurement instrument used to assess individual differences in various content areas. b. An aptitude test measures an individual's competence in an area c. An achievement test measures an individual's potential to do something. d. All of these statements are true.