Approximately 87% of all strokes are the result of ____
a. reduced blood flow caused by a clot or severe narrowing of the arteries
b. blood vessels bursting
c. leakage of blood into the brain
d. vascular cognitive impairment
a
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Early research on classical conditioning was performed with dogs. In certain variations of this research, experimenters repeatedly presented dogs with meat powder just after ringing a bell. The dogs (who would naturally salivate after being exposed to meat powder) learned to associate the bell with the meat powder, and began to salivate as soon as they heard the bell. In this research, the bell
served as a(n) ____. a. unconditioned stimulus that became a conditioned stimulus b. conditioned stimulus that became an unconditioned stimulus c. neutral stimulus that became a conditioned stimulus d. unconditioned stimulus that became a neutral stimulus
A prolonged and disturbed emotional state that impairs multiple aspects of a person's functioning is known as:
A. agoraphobia B. a mood disorder C. a somatization disorder D. a conversion disorder
Which of the following is not one of the assumptions of the t-test for independent samples?
a. The populations of raw scores form at least a roughly normal distribution. b. There are two independent samples of interval/ratio scores. c. There is homogeneity of variance. d. The standard deviation of at least one of the populations is known.
______ refers to the body’s ability to achieve stability through an active process of change.
a. Allostasis b. Homeostasis c. Adrenergy d. Adaptation