Gould L C, Berberian R M, Kasl S V, Thompson W D, Kleber H D
Arch Gen Psychiatry. 1977 Feb;34(2):216-22. doi: 10.1001/archpsyc.1977.01770140106012.
Only recently have multiple-drug use studies involving more than heroin and marijuana begun to be reported in the literature. Four of these studies have found evidence that multiple-drug use is a progressive phenomenon, although the particular pattern of multiple-drug use reported in different populations varies somewhat. This study examines the patterns of multiple-drug use reported by a random sample of 1,094 high school students living in greater New Haven, Conn in the 1972-1973 academic school year. Scalogram analysis reveals a progressive relationship for nine drugs: alcohol, marijuana, hashish, barbiturates, amphetamines, LSD, mescaline, cocaine, and heroin. Cigarettes and glue were not found to play a part in this pattern. The temporal order in which respondents reported that they had begun using each drug supports the results of scalogram analysis only in part.
直到最近，文献中才开始报道涉及除海洛因和大麻之外的多种药物使用的研究。其中四项研究发现有证据表明，多种药物使用是一种渐进现象，尽管不同人群中报告的多种药物使用的具体模式略有不同。本研究调查了1972 - 1973学年居住在康涅狄格州大纽黑文地区的1094名高中生随机样本所报告的多种药物使用模式。量表分析揭示了九种药物之间的渐进关系：酒精、大麻、哈希什、巴比妥类药物、安非他明、麦角酸二乙酰胺（LSD）、三甲氧苯乙胺、可卡因和海洛因。未发现香烟和胶水在这种模式中起作用。受访者报告开始使用每种药物的时间顺序仅部分支持量表分析的结果。
