Evaluation of a new intrinsic and extrinsic motivation scale in youth with psychosis spectrum symptoms.
Evaluation of a new intrinsic and extrinsic motivation scale in youth with psychosis spectrum symptoms.
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DOI：
10.1016/j.comppsych.2023.152413
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发表时间：
2023-11
影响因子：
7.3
通讯作者：
Wolf, Daniel H.
中科院分区：
文献类型：
--
作者：
Didier, Paige R.;Moore, Tyler M.;Calkins, Monica E.;Prettyman, Greer;Levinson, Tess;Savage, Chloe;Leme, Luis Fernando Viegas de Moraes;Kohler, Christian G.;Kable, Joseph;Satterthwaite, Theodore;Gur, Ruben C.;Gur, Raquel E.;Wolf, Daniel H.
内在动机（IM）的损害，即满足内在欲望（如掌握）的驱动力，可能在精神病残疾中发挥关键作用。然而，我们有有限的知识，相对于外在动机（EM）或一般动机（GM），在IM的相对损伤，部分原因是现有措施的局限性。在这里，我们使用一种新的特质内在和外在的动机自我报告量表，在一个样本n = 243参与者，包括那些与精神分裂症，精神病风险，和健康对照解决这个差距。7个IM和6个EM项目中的每一个都使用了7分制的李克特量表来评估对性格陈述的认可。这些项目的双因素分析产生了不同的IM，EM和GM因子得分。采用一般因果定向量表（GCOS-CP）和生活质量3项IM量表（QLS-IM）检验收敛效度和判别效度。效用评估与精神病谱（PS）状态和CAINS临床动机有关。IM和EM显示出可接受的项目间一致性（IM：α = 0.88; EM：α = 0.66）;双因素模型显示出从良好到临界到不充分的拟合，具体取决于特定的拟合度量（SRMR = 0.038，CFI = 0.94，RMSEA = 0.106 ± 0.014）。IM评分与既定IM指标相关：GCOS-CP自主性（rho = 0.38，p < 0.01）和QLS-IM（rho = 0.29，p < 0.01）。支持判别效度，IM与GCOS-CP对照无相关性（rho =-0.14，p > 0.05）。在一个可用的纵向亚组（n = 35）中，两年稳定性很强（IM：rho = 0.64，p < 0.01; EM：rho = 0.55，p < 0.01）。PS青年的特质IM较低（t = 4.24，p < 0.01），与临床失动相关（rho =-0.36，p < 0.01）; EM未显示出显著的临床相关性。这些结果证明了IM在精神病风险中的临床相关性。他们还提供了初步支持的可靠性，有效性和实用性，这种新的特质IM-EM规模，解决了测量差距，可以促进识别的神经行为和临床相关的IM缺陷。
Impairment in intrinsic motivation (IM), the drive to satisfy internal desires like mastery, may play a key role in disability in psychosis. However, we have limited knowledge regarding relative impairments in IM compared to extrinsic motivation (EM) or general motivation (GM), in part due to limitations in existing measures. Here we address this gap using a novel Trait Intrinsic and Extrinsic Motivation self-report scale in a sample of n = 243 participants including those with schizophrenia, psychosis-risk, and healthy controls. Each of the 7 IM and 6 EM items used a 7-point Likert scale assessing endorsement of dispositional statements. Bifactor analyses of these items yielded distinct IM, EM, and GM factor scores. Convergent and discriminant validity were examined in relation to General Causality Orientation Scale (GCOS-CP) and Quality of Life 3-item IM measure (QLS-IM). Utility was assessed in relation to psychosis-spectrum (PS) status and CAINS clinical amotivation. IM and EM showed acceptable inter-item consistency (IM: α = 0.88; EM: α = 0.66); the bifactor model exhibited fit that varied from good to borderline to inadequate depending on the specific fit metric (SRMR = 0.038, CFI = 0.94, RMSEA = 0.106 ± 0.014). IM scores correlated with established IM measures: GCOS-CP Autonomy (rho = 0.38, p < 0.01) and QLS-IM (rho = 0.29, p < 0.01). Supporting discriminant validity, IM did not correlate with GCOS-CP Control (rho = −0.14, p > 0.05). Two-year stability in an available longitudinal subset (n = 35) was strong (IM: rho = 0.64, p < 0.01; EM: rho = 0.55, p < 0.01). Trait IM was lower in PS youth (t = 4.24, p < 0.01), and correlated with clinical amotivation (rho = −0.36, p < 0.01); EM did not show significant clinical associations. These results demonstrate the clinical relevance of IM in psychosis risk. They also provide preliminary support for the reliability, validity and utility of this new Trait IM-EM scale, which addresses a measurement gap and can facilitate identification of neurobehavioral and clinical correlates of IM deficits.
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