SMOKED MARIJUANA: MOTIVATIONAL AND PERFORMANCE EFFECTS

关于吸食大麻的影响的研究趋向于两种 极端--长期对人的慢性倾向影响的研究 实验室急性影响的机构设置或研究 精神运动任务、生理测量和情绪影响。现在 研究代表了这些方法的组合。人类受试者会 14-18年，住在舒适、设备齐全的住宅实验室 几天。他们的行为将被观察和记录，并访问所有 活动和其他受试者将由 实验者。受试者将以三人为一组生活，参与 实验室中提供的普通活动。不同的实验 以前的长期激励研究的程序将被用于 学习自我控制、社会互动和合作。主题将是 需要将时间花在低价值的活动上，以赚取访问其 最有价值的活动。每个受试者获得和使用信用的模式 是一种自我控制的措施，这种模式在两个人中都会观察到 有毒品和无毒品的情况。还将检查该模式 当受试者被要求获得对其他受试者的访问权限时， 吸毒和不吸毒的情况。受试者也将被要求合作 通过为彼此工作，有没有自我管理的大麻 抽烟。此外，还有日常的精神运动和判断电池 任务，以及测量脉率和主观状态。这个 每个程序的主要性能比较是药物之间的 以及不吸毒的情况。如果大麻导致这种影响的减弱 在激励变量中，受试者将表现出较少的积累 资源和对有价值活动访问的更不稳定的控制，以及 可以接触到其他科目。

Research on the effects of smoking marijuana has tended toward two extremes--studies of chronic dispositional effects on people in long-term institutional settings or studies of acute effects on laboratory psychomotor tasks, physiological measures, and mood affect. The present studies represent a combination of these approaches. Human subjects will live in a comfortable, self-contained residential laboratory for 14-18 days. Their behavior will be observed and recorded, and access to all activities and to the other subjects will be programmed by the experimenters. The subjects will live in groups of three, engaging in ordinary activities available in the laboratory. Different experimental procedures from previous long-term motivational research will be used to study self-control, social interaction, and cooperation. Subjects will be required to devote time to low-valued activities to earn access to their most valued activities. Each subject's pattern of earning and using credit is a measure of self-control, and the pattern will be observed in both drug-present and drug-free conditions. The pattern will also be examined when subjects are required to earn access to other subjects, under both drug and no-drug conditions. Subjects will also be required to cooperate by working for each other, with and without self-administered marijuana smoking. In addition there are daily batteries of psychomotor and judgment tasks, as well as measurement of pulse rate and subjective states. The primary comparisons of performance for each procedure are between the drug and no-drug conditions. If marijuana results in a weakening of the effects of motivational variables, subjects will show less accumulation of resources and more erratic control of access to valued activities and access to other subjects.