title: Psychometric analysis of the Ten-Item Perceived Stress Scale.
abstract: Although the 10-item Perceived Stress Scale (PSS-10) is a popular measure, a review of the literature reveals 3 significant gaps: (a) There is some debate as to whether a 1- or a 2-factor model best describes the relationships among the PSS-10 items, (b) little information is available on the performance of the items on the scale, and (c) it is unclear whether PSS-10 scores are subject to gender bias. These gaps were addressed in this study using a sample of 1,236 adults from the National Survey of Midlife Development in the United States II. Based on self-identification, participants were 56.31% female, 77% White, 17.31% Black and/or African American, and the average age was 54.48 years (SD = 11.69). Findings from an ordinal confirmatory factor analysis suggested the relationships among the items are best described by an oblique 2-factor model. Item analysis using the graded response model provided no evidence of item misfit and indicated both subscales have a wide estimation range. Although t tests revealed a significant difference between the means of males and females on the Perceived Helplessness Subscale (t = 4.001, df = 1234, p < .001), measurement invariance tests suggest that PSS-10 scores may not be substantially affected by gender bias. Overall, the findings suggest that inferences made using PSS-10 scores are valid. However, this study calls into question inferences where the multidimensionality of the PSS-10 is ignored.
authors.affiliation: Department of Educational, School, and Counseling Psychology, University of Missouri-Columbia.
authors.forename: John M
authors.initials: JM
authors.lastname: Taylor
mesh_terms: D000328:Adult; D001741:Black or African American / Q000523:psychology* / Q000706:statistics & numerical data; D005163:Factor Analysis, Statistical; D005260:Female; D006380:Helplessness, Learned; D006801:Humans; D008297:Male; D008875:Middle Aged; D011594:Psychometrics; D015203:Reproducibility of Results; D057566:Self Report; D012737:Sex Factors; D012938:Social Perception; D013315:Stress, Psychological / Q000453:epidemiology*; D014481:United States / Q000453:epidemiology; D044465:White People / Q000523:psychology* / Q000706:statistics & numerical data