Spriggens Lauren, Hides Leanne
Centre for Youth Substance Abuse Research (CYSAR), Institute of Health & Biomedical Innovation (IHBI), School of Psychology & Counselling, Queensland University of Technology (QUT), GPO Box 2434, Kelvin Grove, Brisbane, QLD 4001, Australia.
Centre for Youth Substance Abuse Research (CYSAR), Institute of Health & Biomedical Innovation (IHBI), School of Psychology & Counselling, Queensland University of Technology (QUT), GPO Box 2434, Kelvin Grove, Brisbane, QLD 4001, Australia.
Schizophr Res. 2015 Jun;165(1):3-8. doi: 10.1016/j.schres.2015.03.023. Epub 2015 Apr 11.
To examine the influence of personality traits on the relationship between cannabis use and psychotic like experiences (PLEs) in young adults.
499 lifetime cannabis users aged 18 to 25years completed an online survey assessing PLEs using the positive scale of the Community Assessment of Psychic Experiences (CAPE) and personality styles using the Brief Schizotypal Personality Questionnaire (SPQ-B) and the Substance Use Risk Profile Scale (SURPS), a measure of trait hopelessness, anxiety-sensitivity, impulsivity and sensation seeking. Cannabis use was assessed using items from the Youth Risk Behaviour Survey (YRBS) and a self-report measure of the lifetime level of cumulative cannabis use.
Cannabis use as well as schizotypy and the four SURPS personality risk profiles were significantly associated with the frequency of PLEs in young cannabis users. The cumulative levels of lifetime cannabis exposure, trait schizotypy and hopelessness were the strongest predictors of PLEs in the multivariate analysis. Little evidence of a moderating effect of the personality risk profiles on the relationship between cannabis use and PLEs was found. Trait hopelessness was found to have a moderating effect on the relationship between the recency of cannabis use and the frequency of PLEs.
The cumulative levels of lifetime cannabis exposure, trait schizotypy and hopelessness were associated with PLEs in young cannabis users. Individuals with high levels of trait hopelessness who use cannabis may be at higher risk of PLEs. Future research is required to increase understanding of the relationship between cannabis use and PLEs, using more complex moderation models containing personality traits along with other risk factors for PLEs.
研究人格特质对年轻成年人使用大麻与类精神病体验（PLEs）之间关系的影响。
499名年龄在18至25岁之间的终生大麻使用者完成了一项在线调查，该调查使用精神体验社区评估（CAPE）的阳性量表评估PLEs，并使用简短分裂型人格问卷（SPQ - B）和物质使用风险概况量表（SURPS）评估人格类型，SURPS是一种用于测量特质绝望感、焦虑敏感性、冲动性和感觉寻求的量表。使用青少年风险行为调查（YRBS）中的项目以及一项关于终生累积大麻使用水平的自我报告测量来评估大麻使用情况。
在年轻的大麻使用者中，大麻使用以及分裂型人格特质和四种SURPS人格风险概况与PLEs的频率显著相关。在多变量分析中，终生大麻暴露的累积水平、特质分裂型人格特质和绝望感是PLEs的最强预测因素。几乎没有发现人格风险概况对大麻使用与PLEs之间关系有调节作用的证据。发现特质绝望感对近期大麻使用与PLEs频率之间的关系有调节作用。
终生大麻暴露的累积水平、特质分裂型人格特质和绝望感与年轻大麻使用者的PLEs相关。特质绝望感高且使用大麻的个体可能有更高的PLEs风险。未来需要进行更多研究，使用包含人格特质以及其他PLEs风险因素的更复杂调节模型，以增进对大麻使用与PLEs之间关系的理解。
