Measuring emotion socialization in families affected by pediatric cancer: Refinement and reduction of the Parents' Beliefs about Children's Emotions questionnaire.

The aim of this study is to conduct a multimethod psychometric reduction in the Parents' Beliefs about Children's Emotions (PBCE) questionnaire using an item response theory framework with a pediatric oncology sample. Participants were 216 pediatric oncology caregivers who completed the PBCE. The PBCE contains 105 items (11 subscales) rated on a 6-point Likert-type scale. We evaluated the PBCE subscale performance by applying a partial credit model in WINSTEPS. Sixty-six statistically weak items were removed, creating a 44-item PBCE questionnaire with 10 subscales and 3 response options per item. The refined scale displayed good psychometric properties and correlated .910 with the original PBCE. Additional analyses examined dimensionality, item-level (e.g. difficulty), and person-level (e.g. ethnicity) characteristics. The refined PBCE questionnaire provides better test information, improves instrument reliability, and reduces burden on families, providers, and researchers. With this improved measure, providers can more easily identify families who may benefit from psychosocial interventions targeting emotion socialization. The results of the multistep approach presented should be considered preliminary, given the limited sample size.