Developing and Examining Validity Evidence for the Writing Rubric to Inform Teacher Educators (WRITE)

Assessment is an under-researched challenge of writing development, instruction, and teacher preparation. One reason for the lack of research on writing assessment in teacher preparation is that writing achievement is multi-faceted and difficult to measure consistently. Additionally, research has reported that teacher educators and preservice teaches may have limited assessment literacy knowledge. In previous studies, researchers have struggled to provide strong evidence of validity, reliability, and fairness across raters, writing samples, and rubric items. In the present study, we fill several gaps in the research literature by developing a rubric, the Writing Rubric to Inform Teacher Educators (WRITE), which utilizes a structure that promotes assessment literacy while raters score samples. Furthermore, using modern measurement theory, we strengthen the field’s understanding of writing assessment by providing evidence of validity, reliability, and fairness of scores to support the interpretation and use of the WRITE

Finishing the euchromatic sequence of the human genome

The sequence of the human genome encodes the genetic instructions for human physiology, as well as rich information about human evolution. In 2001, the International Human Genome Sequencing Consortium reported a draft sequence of the euchromatic portion of the human genome. Since then, the international collaboration has worked to convert this draft into a genome sequence with high accuracy and nearly complete coverage. Here, we report the result of this finishing process. The current genome sequence (Build 35) contains 2.85 billion nucleotides interrupted by only 341 gaps. It covers ∼99% of the euchromatic genome and is accurate to an error rate of ∼1 event per 100,000 bases. Many of the remaining euchromatic gaps are associated with segmental duplications and will require focused work with new methods. The near-complete sequence, the first for a vertebrate, greatly improves the precision of biological analyses of the human genome including studies of gene number, birth and death. Notably, the human enome seems to encode only 20,000-25,000 protein-coding genes. The genome sequence reported here should serve as a firm foundation for biomedical research in the decades ahead