Abstract
As research examining sluggish cognitive tempo (SCT) advances, it is important to examine the structure and validity of SCT in a variety of samples, including samples of children who are clinically-distressed but not referred specifically for attention-deficit/hyperactivity disorder (ADHD). The present study used a large sample of psychiatrically hospitalized children (N = 680; 73 % male; 66 % African American) between the ages of 6 and 12 to examine the latent structure of SCT, ADHD, oppositional defiant disorder (ODD), depression, and anxiety using confirmatory factor analysis (CFA). Results of the CFA analyses demonstrated that SCT is distinct from these other dimensions of child psychopathology, including ADHD inattention, depression, and anxiety. Regression analyses indicated that SCT symptoms were positively associated with depression and, to a lesser degree, anxiety. SCT symptoms were also positively associated with children’s general social problems, whereas SCT symptoms were negatively associated with an observational measure of behavioral dysregulation (i.e., frequency of time-outs received as a part of a manualized behavior modification program). These associations were significant above and beyond relevant child demographic variables (i.e., age, sex, race), children’s other mental health symptoms (i.e., ADHD, ODD, depression, anxiety symptoms), and, for all relations except child anxiety, parents’ own anxiety and depression symptoms.
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Measurement invariance was tested to investigate if CFA results were consistent between boys and girls. At the outset, our model demonstrated adequate configural invariance (χ 2 = 1426.41, p < 0.001, χ 2/df = 1.75; CFI = 0.89; TLI = 0.88; RMSEA = 0.04, 90%CI 0.04, 0.05), suggesting that the pattern of free and fixed loadings was invariant across genders. Using the configural model as a baseline, we tested weak invariance of factor loadings across participant gender. Given our focus on SCT, we first tested whether constraining the factor loadings of the three SCT items to be equal across gender significantly worsened fit compared to a model in which these loadings were allowed to freely vary (i.e., partial invariance: Bryne et al. 1989). The constrained model was not significantly different from the unconstrained model (Δχ2(3) = 0.12, n.s.; ΔCFI = 0.00; RMSEA = 0.04), suggesting invariance for the SCT items. We next tested weak invariance across all factor loadings. Although the chi-square difference test was significant (Δχ2(30) = 45.27, p = 0.03), such tests may be too strict for testing full invariance given the large sample size and other indices suggesting invariance (ΔCFI = 0.00; RMSEA = 0.05 falls within the 95 % CI of the configural model). Examination of specific items indicated that item 24 (“Doesn’t eat well”) loaded on the DEP factor for boys (λ = 0.27) but not for girls (λ = 0.12). As a check, allowing this item to freely vary while constraining all others to be equal did, in fact, indicate weak invariance (Δχ2(29) = 41.37, n.s.; ΔCFI = 0.00; RMSEA = 0.05). Finally, tests of strong factorial invariance were conducted, with results suggesting invariant factor intercepts across gender (Δχ2(6) = 7.05, n.s.; ΔCFI = 0.00; RMSEA = 0.05). Given these results, the full model collapsed across gender is presented.
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Becker, S.P., Luebbe, A.M., Fite, P.J. et al. Sluggish Cognitive Tempo in Psychiatrically Hospitalized Children: Factor Structure and Relations to Internalizing Symptoms, Social Problems, and Observed Behavioral Dysregulation. J Abnorm Child Psychol 42, 49–62 (2014). https://doi.org/10.1007/s10802-013-9719-y
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DOI: https://doi.org/10.1007/s10802-013-9719-y