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The current study details the validation of a brief, daily version of the Injustice Experience Questionnaire (IEQ), which measures injustice appraisals related to the experience of pain and disability.<\/jats:p><\/jats:sec><jats:sec><jats:title>Methods<\/jats:title><jats:p>Injustice Experience Questionnaire items were adapted for daily use and evaluated using cognitive interviews, and the resulting measure was administered for 10\u00a0days to two Internet\u2010based samples of US adults with chronic lower back pain.<\/jats:p><\/jats:sec><jats:sec><jats:title>Results<\/jats:title><jats:p>Study 1 (<jats:italic>N<\/jats:italic>\u00a0=\u00a0126) refined the 12\u2010item IEQ measure into a six\u2010item short form; exploratory factor analyses suggested optimal model fit for the two\u2010factor model established in the original IEQ. Using confirmatory factor analyses, Study 2 (<jats:italic>N<\/jats:italic>\u00a0=\u00a0131) replicated the two\u2010factor structure and demonstrated significant correlations of the Daily IEQ with other relevant constructs to chronic pain, such as pain catastrophizing, pain intensity, pain\u2010related activity and social interference, depressed mood and anxiety. Daily IEQ items showed a significant degree of clustering (intraclass correlations ranging from .577 to .735) but demonstrated sufficient variability at the daily level to allow for daily\u2010level analysis.<\/jats:p><\/jats:sec><jats:sec><jats:title>Conclusions<\/jats:title><jats:p>Injustice appraisals show a sufficient degree of daily variability to warrant their measurement as a time\u2010varying construct. Further examination of antecedents and correlates of daily injustice appraisals, as well as their potential role as mechanisms of effect, may better explain the dynamics of affective and behavioral responses to chronic pain.<\/jats:p><\/jats:sec><jats:sec><jats:title>Significance<\/jats:title><jats:p>The current study presents a validation of a daily version of the Injustice Experience Questionnaire in chronic low back pain. Results indicate that injustice appraisals vary significantly from day to day, and daily variability in injustice perception shows robust associations with pain intensity, pain\u2010related interference in physical and social activity, and mood in chronic low back pain. These results emphasize the importance of assessing injustice perception as a time\u2010varying, rather than stable construct in future empirical and clinical studies.<\/jats:p><\/jats:sec>","DOI":"10.1002\/ejp.1702","type":"journal-article","created":{"date-parts":[[2020,12,1]],"date-time":"2020-12-01T23:45:19Z","timestamp":1606866319000},"page":"668-679","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":2,"title":["Development and validation of a daily Injustice Experience Questionnaire"],"prefix":"10.1002","volume":"25","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-6388-0920","authenticated-orcid":false,"given":"John","family":"Sturgeon","sequence":"first","affiliation":[{"name":"Department of Anesthesiology and Pain Medicine University of Washington Medical Center Seattle WA USA"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Joshua","family":"Seward","sequence":"additional","affiliation":[{"name":"Department of Psychology University of Alabama at Birmingham Birmingham AL USA"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Deanna","family":"Rumble","sequence":"additional","affiliation":[{"name":"Department of Psychology University of Alabama at Birmingham Birmingham AL USA"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Zina","family":"Trost","sequence":"additional","affiliation":[{"name":"Department of Physical Medicine and Rehabilitation Virginia Commonwealth University School of Medicine Richmond VA USA"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"311","published-online":{"date-parts":[[2020,12,14]]},"reference":[{"key":"e_1_2_8_2_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.jocrd.2015.01.006"},{"key":"e_1_2_8_3_1","doi-asserted-by":"publisher","DOI":"10.1002\/jts.22495"},{"key":"e_1_2_8_4_1","doi-asserted-by":"publisher","DOI":"10.3389\/fpubh.2018.00149"},{"key":"e_1_2_8_5_1","doi-asserted-by":"publisher","DOI":"10.1111\/j.1471-6712.2012.00967.x"},{"key":"e_1_2_8_6_1","doi-asserted-by":"publisher","DOI":"10.1037\/int0000109"},{"key":"e_1_2_8_7_1","doi-asserted-by":"publisher","DOI":"10.2147\/JPR.S128184"},{"key":"e_1_2_8_8_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.chb.2013.05.009"},{"key":"e_1_2_8_9_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.jpain.2017.05.003"},{"key":"e_1_2_8_10_1","doi-asserted-by":"publisher","DOI":"10.1080\/10705511.2017.1390394"},{"key":"e_1_2_8_11_1","doi-asserted-by":"publisher","DOI":"10.1038\/nrrheum.2011.2"},{"key":"e_1_2_8_12_1","doi-asserted-by":"publisher","DOI":"10.1037\/a0015808"},{"key":"e_1_2_8_13_1","doi-asserted-by":"publisher","DOI":"10.1023\/B:SOCI.0000007340.64308.dc"},{"key":"e_1_2_8_14_1","doi-asserted-by":"publisher","DOI":"10.1097\/BRS.0b013e318241e5de"},{"key":"e_1_2_8_15_1","doi-asserted-by":"publisher","DOI":"10.1046\/j.1526-4637.2003.03034.x"},{"key":"e_1_2_8_16_1","doi-asserted-by":"publisher","DOI":"10.1016\/S0005-7916(01)00010-6"},{"key":"e_1_2_8_17_1","doi-asserted-by":"publisher","DOI":"10.1371\/journal.pone.0178894"},{"key":"e_1_2_8_18_1","doi-asserted-by":"publisher","DOI":"10.1016\/S0304-3959(00)00450-4"},{"key":"e_1_2_8_19_1","doi-asserted-by":"publisher","DOI":"10.1016\/0304-3959(96)03078-3"},{"key":"e_1_2_8_20_1","doi-asserted-by":"publisher","DOI":"10.1002\/ejp.1361"},{"key":"e_1_2_8_21_1","doi-asserted-by":"publisher","DOI":"10.1080\/10705519909540118"},{"key":"e_1_2_8_22_1","doi-asserted-by":"publisher","DOI":"10.1046\/j.0039-0402.2003.00252.x"},{"key":"e_1_2_8_23_1","doi-asserted-by":"publisher","DOI":"10.1027\/1614-2241.1.3.86"},{"key":"e_1_2_8_24_1","doi-asserted-by":"publisher","DOI":"10.1207\/s15327906mbr3302_1"},{"key":"e_1_2_8_25_1","doi-asserted-by":"publisher","DOI":"10.1177\/0963721413496811"},{"key":"e_1_2_8_26_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.jrp.2010.11.003"},{"key":"e_1_2_8_27_1","doi-asserted-by":"publisher","DOI":"10.1002\/9781118838860"},{"key":"e_1_2_8_28_1","doi-asserted-by":"publisher","DOI":"10.1037\/rep0000075"},{"key":"e_1_2_8_29_1","volume-title":"Mplus statistical modeling software (version 6.12)","author":"Muth\u00e9n L.","year":"2011"},{"key":"e_1_2_8_30_1","doi-asserted-by":"publisher","DOI":"10.1097\/AJP.0b013e318223622c"},{"key":"e_1_2_8_31_1","first-page":"e015312","article-title":"The influence of multisite pain and psychological comorbidity on prognosis of chronic low back pain: Longitudinal data from the Norwegian HUNT Study","volume":"7","author":"Nordstoga A. 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