Doctor of Philosophy, The Ohio State University, 2018, EDU Teaching and Learning
The aim of this research is to develop a measurement instrument that is valid and reliable, called the Middle School-Life Science Concept Inventory (MS-LSCI), for the purpose of measuring the life science conceptual understanding of middle school-level students. Although there are several existing concept inventories related to biology concepts (i.e. Secondary-Biology Concept Inventory (S-BCI) and Biology Concept Inventory (BCI)), there is no fully developed concept inventory available that collectively measures the major life science concepts covered in middle school classrooms (Klymkowsky, Underwood, & Garvin-Doxas, 2010; Stammen, Lan, Schuchaerdt, Malone, Ding, Sabree, & Boone, 2016). Study one focuses on how data from a multi-panel expert review and student interviews were used in the Middle School-Life Science's (MS-LSCI) item content qualitative validation and iterative refinement process. Of the 50 questions reviewed by the expert panels, 12 items were identified as having content validity concerns. Generally, these content validity concerns fell within two categories: (i) imprecise phrasing and (ii) age inappropriateness. During the student interviews, a total of 26 items were identified as displaying content validity issues. These 26 items fell into one of three categories: (i) imprecise phrasing, (ii) contextual ambiguity, and (iii) formatting/diagrammatic complexity. Using the data from the multi-panel expert review and student interviews, the items with content validity concerns were refined and modified before the items were field tested. Study two describes the MS-LSCI's quantitative validation and item selection process. Specifically, this study focuses on the psychometric functioning of the 60 field-tested MS-LSCI items using Rasch analysis. The results of this development, refinement, and evaluation process suggest that the 25-item MS-LSCI is a valid instrument in that the items appear to be unidimensional, item and person measures display (open full item for complete abstract)
Committee: Karen Irving (Committee Chair); Kathy Malone (Advisor); William Boone (Committee Member); Sabree Zakee (Committee Member)
Subjects: Biology; Ecology; Education; Educational Tests and Measurements; Science Education; Secondary Education; Teaching