Natale M, Dahlberg C C, Jaffe J
J Commun Disord. 1979 Feb;12(1):45-52. doi: 10.1016/0021-9924(79)90020-0.
This study examined the effects of lysergic acid (LSD) and dextroamphetamine (DA) on therapist--patient matching of speech rhythms (mean phrase period) in psychotherapy. LSD, DA, and placebo (PL) were administered repeatedly over a 1 1/2-year period to seven patients in a randomized double-blind design. The second, fourth, and sixth encounters with LSD, DA, and PL were analyzed. These therapy dialogues were processed by an on--off detector of speech which computed probabilities of vocalizing when already talking (T), when listening (L), and when pausing (P) for therapist and patient, respectively. The mean phrase period for the therapist and the patient was calculated from the vocalization probabilities (T, P). The results show that both LSD and DA significantly enhance therapist-patient matching of mean phrase period in the earliest (second) session, an effect that disappears for both drugs, but later for DA (sixth session) than for LSD (fourth session). At no time was this effect observed in PL sessions, nor was the matching a simple function of a therapist--patient convergence of the components (T, P) of the mean phrase period.
本研究考察了麦角酸（LSD）和右旋苯丙胺（DA）对心理治疗中治疗师与患者言语节奏匹配（平均短语时长）的影响。在一项随机双盲设计中，对7名患者在1年半的时间里反复给予LSD、DA和安慰剂（PL）。分析了与LSD、DA和PL的第二次、第四次和第六次会面。这些治疗对话由一个言语开关探测器进行处理，该探测器分别计算治疗师和患者在说话（T）、倾听（L）和停顿（P）时发声的概率。治疗师和患者的平均短语时长由发声概率（T、P）计算得出。结果表明，LSD和DA均在最早的（第二次）会话中显著增强了治疗师与患者平均短语时长的匹配度，两种药物的这种效果均消失，但DA（第六次会话）比LSD（第四次会话）消失得更晚。在PL会话中，任何时候都未观察到这种效果，且这种匹配也不是平均短语时长各成分（T、P）治疗师与患者趋同的简单函数。
