Hakan has lost interest in all things--friendship, work, hobbies, dating--and he doesn't even seem bothered by the fact that he has no job, no goals, no get up and go. A clinical psychologist might diagnose Hakan's striking lack of interest as _______________.

a. a negative symptom of schizophrenia.
b. a florid symptom of schizophrenia
c. a positive symptom of schizophrenia
d. a differentiating symptom of schizophrenia

Answer: a. a negative symptom of schizophrenia.

Psychology

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Who claimed that behavior is controlled by environmental consequences?

a) William James b) Sigmund Freud c) B. F. Skinner d) Wilhelm Wundt

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The short fibers which extend from the neuron, allowing it to receive messages from other neurons are ______

a. axons b. dendrites c. nerve bundles d. synapses

Psychology