A researcher designs an experiment to test a new memory medication. She received the names of 1,000 individuals willing to participate in her study. She plans to study 250 people. To reduce experimenter bias, what procedure must be used when choosing the participants? a
Deception

b
Naturalistic observation

c
Random assignment

d
Random sampling

e
Research accountability

How can firms use marginal analysis to determine the price of a product? a) profit maximization can occur when the marginal cost exceeds the marginal revenue. b) the total cost of production can determine the individual unit price of a product. c) marginal analysis can be used to determine at what price profit maximization occurs. d) firms can calculate the marginal cost of a product and set the price lower than the cost.

Choose the description that best matches each word. write the correct letter in the blank. 1. ostinato a. large, extended composition for chorus and orchestra 2. atonality b. full orchestra 3. musicology c. festive, march-like opening to a play or “semi-opera” 4. concerto d. small group of solo instruments 5. minimalism e. music contrasting a full orchestra and solo instruments 6. art song f. music played under the action to influence the mood 7. strophic form g. a vocal song focusing on artistic expression 8. incidental h. each stanza of a poem is set to the same music 9. oratorio i. repeated musical pattern that provides unity to a piece 10. dissonance j. steady beat; simple harmonies; short, repetitive melody 11. concertino k. harsh, unstable sounding of pitches; harmonic tension 12. tutti l. all 12 tones of chromatic scale, no tonal center 13. entrada m. the historical and scientific study of music

Melissa is fearful of men and refuses to go on dates. her therapist suggests that she is fearful because she was sexually abused when she was young. the therapist's suggestion most clearly reflects a perspective.a.) humanistic b.) behavioralc.) biological d.) psychoanalytice.) sociocultural