The eight scientific practices in the Next Generation Science Standards (NGSS) are significant theoretical constructs that reflect the nature of science; they are intended to guide science teaching and learning. Yet, operationalization of these practices in terms of student learning remains limited, and a measurement tool for the eight practices…

Describes the development, validity, and reliability (0.91 to 0.94) of a 50-item, Likert-format scale to measure students' attitudes toward science in grades 4 through 12 (N=806). (Author/JN)

Multiple-choice tests were constructed for seven problem-solving skills using learning hierarchies based on expert-novice differences and refined in three phases of field testing. Includes test reliabilities (sufficient for making judgments of group performance but insufficient in single-administration for individual assessment), validity, and…

Assesses Scientific Attitude Inventory (SAI) by examining the instrument and 30 studies in which it has been used. In addition, shows how conceptual analysis may be used to investigate validity of a research instrument. Indicates that SAI needs reworking since it is less than certain of what is being measured. (Author/JN)

"Women in Science Scale," a 27-item instrument for measuring adolescents' attitudes toward women in science careers, was determined to be reliable by estimates of internal consistency (alpha = 0.92) and stability over time (r = 0.82). The instrument also clearly distinguishes between scores of males and females regardless of sex. (JN)

Describes development and validation of a 24-item test which assesses student performance on a set of 12 objectives related to planning and constructing an investigation. In addition to sound psychometric properties, the test is distinctive because it includes a set of interrelated cumulative objectives which reflect autonomous problem solving.…