figure 15.4 
-SIV causes symptomless infections in monkeys and apes,yet causes AIDS-like disease in chimpanzees.HIV is closely related to SIV and causes AIDS in humans.Which of the following is the best explanation for these observations?
Definitions:
Psychodynamic Practitioners
Therapists who use theories and techniques based on psychoanalytic concepts to explore the unconscious mind and its influence on behavior.
Survey Method
A research technique that involves asking a large number of people questions on a particular subject and analyzing their responses to draw conclusions.
Questionnaire
A structured set of questions designed for collecting information from individuals on various topics.
Biologically-Oriented Psychologists
Psychologists who analyze how the brain, neurotransmitters, and other aspects of our biology influence our behaviors, thoughts, and feelings.
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