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One of the many theories about alcoholism is the learning and reinforcement theory, which explains alcoholism by considering alc
One of the many theories about alcoholism is the learning and reinforcement theory, which explains alcoholism by considering alc
admin
2010-04-28
33
问题
One of the many theories about alcoholism is the learning and reinforcement theory, which explains alcoholism by considering alcohol ingestion as reflex response to some stimulus and as a way to reduce an inner drive state such as fear or anxiety. Characterizing life situations in terms of approach and avoidance, this theory holds that persons tend to be drawn to pleasant situations or repelled by unpleasant ones. In the latter case, alcohol ingestion is said to reduce the tension or feelings of unpleasantness and to replace them with the feeling of euphoria generally observed in most persons after they have consumed one or more drinks.
Some experimental evidence tends to show that alcohol reduces fear in an approach - avoidance Situation. Conger trained one group rats to approach a food goal and, using aversive conditioning, trained another group to avoid electric shock. After an injection of alcohol the pull away from the shock was measurably weaker, while the pull toward food was unchanged.
The obvious troubles experienced by alcoholic persons appear to contradict the learning theory in the explanation of alcoholism. The discomfort, pain, and punishment they experience should presumably serve as a deterrent to drinking. The fact that alcoholic persons continue to drink in the face of family discord, loss of employment, illness, and other sequels of repeated bouts is explained by the proximity of the drive reduction to the consumption of alcohol; that is, alcohol has the immediate effect of reducing tension while the unpleasant consequences of drunken behavior come only later, Tile learning paradigm, therefore, favors the establishment and repetition of the resort to alcohol.
In fact, the anxieties and feelings of guilt induced by the consequences of excessive alcohol ingestion may themselves become the signal for another bout of alcohol abuse. The way in which the cue for another bout could be the anxiety itself is explained by the process of stimulus generalization: Conditions or events occurring at the time of reinforcement tend to acquire the characteristics of stimuli. When alcohol is consumed in association with a state of anxiety or fear, the emotional state itself takes on the properties of a stimulus, thus triggering another drinking bout.
The role of punishment is becoming increasingly important in formulating a cause of alcoholism based on the principles of learning theory. While punishment may serve to suppress a response, experiments have shown that in some. cases it can serve as a reward and reinforce the behavior. Thus if the alcoholic person has learned to drink under conditions of both reward and punishment, either type of condition may precipitate renewed drinking.
Ample experimental evidence supports the hypothesis that excessive alcohol consumption can be learned. By gradually increasing the concentration of alcohol in &inking water, psychologists have been able to induce the ingestion of larger amounts of alcohol by an animal than would be normally consumed. Other re- searchers have been able to achieve similar results by varying the schedule of reinforcement; that is, by requiring the animal to consume larger and larger amounts of the alcohol solutions before rewarding it. in this manner, animals learn to drink enough to become dependent on alcohol in terms of demonstrating withdrawal symptoms.
Which of the following statements is not directly stated but can be inferred from the passage?
选项
A、The behavior of alcoholics contradicts the approach - avoidance theory.
B、People may be taught by experience to become alcoholics.
C、Punishment may become the stimulus for added drinking.
D、The behavior of alcoholics seems to defy accepted psychological theories.
答案
B
解析
A是错的,与第三段观点相反,C不能从文中找到,而D既没有直接也没有暗示。
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专业英语八级
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