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Home > State-level impulsivity, affect, and alcohol: a psychometric evaluation of the Momentary Impulsivity Scale across two intensive longitudinal samples.

Stevens, Angela K and Blanchard, Brittany E and Talley, Amelia E and Brown, Jennifer L and Halvorson, Max A and Janssen, Tim and King, Kevin M and Littlefield, Andrew K (2020) State-level impulsivity, affect, and alcohol: a psychometric evaluation of the Momentary Impulsivity Scale across two intensive longitudinal samples. Journal of Research in Personality , 85 . https://doi.org/10.1016/j.jrp.2020.103914.

URL: https://www.sciencedirect.com/science/article/abs/...

We reexamined the psychometric properties of the Momentary Impulsivity Scale (MIS) in two young adult samples using daily diary (=77) and ecological momentary assessment (=147). A one-factor between- and within-person structure was supported, though "I felt impatient" loaded poorly within-person. MIS scores consistently related to emotion-driven trait impulsivity; however, MSSDs of MIS scores were unrelated to outcomes after accounting for aggregate MIS scores. We observed positive, within-person correlations with negative, but not positive, affect. Between-person MIS scores correlated with alcohol problems, though within-person MIS-alcohol relations were inconsistent. MIS scores were unrelated to laboratory-based impulsivity tasks. Findings inform the assessment of state-level impulsivity in young adults. Future research should prioritize expanding the MIS to capture the potential multidimensionality of state-level impulsivity.


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