目的：探討安非他命使用疾患患者之犯罪行為，及其司法精神鑑定的分析。方法 ：以臺北市立療養院自民國 70 年 4 月至 86 年 1 月所有刑案鑑定個案中，符合安非他命 使用疾患診斷準則者 34 名為對象，分析精神鑑定報告書與法院之判決書之資料，以探討安 非他命使用疾患患者在犯行時之精神病理，及其與犯行的性質、加害之對象、動機間之關係 。並比較精神鑑定結果與法院判決之一致率。結果：整體而言，安非他命使用疾患患者之犯 行，以對於社會或國家之犯罪與對個人個別或全體財產之犯罪為主，且多是為獲得財物或使 用毒品所為之非暴力型犯罪，加害對象以無特定對象與陌生人為最多。安非他命濫用和嚴重 暴力犯罪與縱火犯間，仍存有密切的關係；且此類個案，犯行時大部分均有明顯精神病症狀 ，犯罪前均未規則接受治療。精神鑑定結果與法院判決之一致率為 93.9%。結論：安非他命 使用疾患患者在犯行時是否有精神病症狀，乃是影響責任能力判定之重要依據。然而實施司 法精神鑑定時，應釐清受鑑定人之犯罪行為是否屬原因自由行為，俾使責任能力之判定更為 完善。

　　　　　Objective: To investigate the behavioral characteristics of criminal offenders with amphetamine use disorder. Methods: The authors reviewed the legal and medical records of 34 criminal offenders who received forensic psychiatric evaluation at Taipei City Psychiatric Center from April 1981 to January 1997. All of the offenders met DSM-Ⅳ criteria for either amphetamine abuse or amphetamine dependence. Relationships between substance misuse pattern, nature of the offenses, victims. motives and psychopathology at the time of the offense were investigated. The differences between the psychiatrist's opinions and the judgements of the court were also investigated. Results: Offenders of amphetamine dependence tended to commit offenses against property or against society as a whole. Their victims consisted mostly of strangers. Offenders of amphetamine abuse committed more offenses against property than offenders of amphetamine dependence. Their victims consisted mostly of strangers. Most of the offenders who committed severely violent offenses against people or arson were under the influence of prominent psychotic symptoms during criminal acts and had not received regular psychiatric treatment prior to the offenses. The consistency rate between the psychiatrist's opinions and court judgements was 93.9%. Conclusion: The results of the study revealed that the psychiatrist's opinions and court judgements about the responsibility of these offenders were influenced by their psychotic symptoms. Further attention should be drawn to the assessment of whether subgstance related intoxication and psychotic states are voluntarily induced or not.