The design-based research methodology has been gaining significance, in recent years, in the field of educational research. Several authors have pointed out the potential of this methodology to support the development of research processes with strong practical applicability. Its iterative nature allows researchers to organize their studies into iterative research cycles that allow them to improve products, processes, and test new resources and educational approaches. This study aimed to develop knowledge about how this methodology has been used in K-12 educational settings and in initial and continuing teacher education. Thus, a systematic literature review was carried out based on 163 selected papers, published between 2013 and 2020 and gathered from SCOPUS and ISI Web of Science Databases. The results highlighted the characterization data of DBR studies, the research contexts and settings, the DBR approaches, and the contribution for the educational field.

Quality of life (QOL) is actually helpful to organizations for guiding personalized support plans and enhance personal outcomes. However, there is a lack of consensus about the QOL construct in the field of intellectual disability (ID). This study aims (a) to analyze the first-order factor structure (i.e., eight domains) of the Portuguese version of the Personal Outcomes Scale (POS), and (b) to compare two alternative models of the higher factor structure of the QOL construct (i.e., Salamanca and Schalock). Both aims were investigated by examining self-report and report-of-others measures. Data were collected from 1,264 adults with mild or moderate levels of ID and respective proxies. Results from confirmatory factor analysis (CFA) showed evidence of suitable psychometric properties of the QOL dimensions. Findings also highlighted that the first-order model was more robust than either of the two second-order models. Nevertheless, the Schalock structure was stronger than the Salamanca structure. Although further research is needed, the results reveal that the Portuguese POS may be a valid and reliable instrument to measure QOL of adults with ID. The implication of these results are discussed highlighting the scale as a useful tool to serve as the basis for planning and evaluating personalized supports. La calidad de vida (CV) es útil a las organizaciones, permitiendo mejorar los resultados personales. Sin embargo, hay una falta de consenso sobre la construcción de la CV en personas con discapacidad intelectual (DI). Este estudio tiene como objetivo (a) analizar los factores de primer orden de la versión portuguesa de la Personal Outcomes Scale (POS), y (b) comparar dos modelos alternativos de segundo orden (Salamanca y Schalock). Estos dos objetivos fueron investigados a través de medidas del autoinforme y del informe de los otros. Los datos fueron recogidos de 1.264 personas con DI leve o moderada y sus respectivos cuidadores. Los resultados de la análisis factorial confirmatorio (AFC) indicaron valores psicométricos apropiados de las dimensiones de la CV. Los resultados mostraron que el modelo de primer orden era más robusto que cualquier uno de los dos modelos de segundo orden. No obstante, la estructura de Schalock fue más fuerte que la estructura de Salamanca. Aunque sea necesario más investigación, la POS portuguesa es un instrumento válido y fiable para medir la CV de personas con DI. La implicación de esta escala se discute como una herramienta útil para servir como base para la planificación y evaluación de apoyos personalizados.

This article presents the results of a pilot study to evaluate the psychometric properties of the Escala Pessoal de Resultados (EPR), the Portuguese version of the Personal Outcomes Scale (POS), to assess quality of life (QOL) in people with intellectual disability (ID) in Portugal. We present the adaptation and validation processes of the EPR. Data were collected from 1,264 adults with intermittent and limited levels of support needs and respective proxies. Results of the research are discussed in requisites of the validity and reliability. The different coefficients illustrate that this scale may be a useful addition to the QOL assessment in Portuguese people with ID.