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. Author manuscript; available in PMC: 2021 Apr 1.
Published in final edited form as: J Psychiatr Res. 2020 Jan 29;123:95–101. doi: 10.1016/j.jpsychires.2020.01.016

Table 1.

Descriptive Statistics of Manifest Study Variables

Variable Mean SD Range Skew Kurtosis
SCT 1.19 0.59 0 – 3 0.65 0.34
ADHD Inattention 1.68 0.54 1 – 4 1.07 1.23
ADHD Hyperactivity 1.75 0.55 1 – 4 0.88 0.62
ADHD Impulsivity 1.62 0.6 1 – 4 1.22 1.34
Depression 0.54 0.61 0 – 3 1.53 2.05
Anxiety 0.48 0.51 0 – 3 1.46 2.18
RRS Reflection 9.69 3.69 4 – 20 0.56 −0.42
RRS Brooding 10.51 3.91 4 – 20 0.49 −0.54
IPI Mind-wandering 2.76 0.91 1 – 5 0.21 −0.60
MEWS Mind-wandering 1.01 0.65 0 – 3 0.53 −0.003

Note. N = 4,679. ADHD = attention-deficit/hyperactivity disorder. IPI = Imaginal Process Inventory. MEWS = Mind Excessively Wandering Scale. RRS = Ruminative Response Scale. SCT = sluggish cognitive tempo. SD = standard deviation.