If children have opportunities to develop positive attitudes toward learning science, the pipeline to science careers can be maintained and enhanced. This article describes the development and validation of a short form, 24-item, Assessment of Attitudes in Science Constructs for Fourth Grade (AASC-4) for utilization in future research aimed at improving youths' Attitudes Toward Science (ATS). A researcher developed long form, 50-item AASC-4 was administered in an intervention and comparison, pre- and post-implementation science education study (n=1,117). Exploratory factor analysis was conducted to reduce the original 50-item AASC-4 to the current 24-item form. The current AASC-4 included 24 questions, and eight constructs. Reliability measures of the short-form AASC-4 improved reliability for Fear of Failure on Course from 0.200 to 0.694, Value of Science from 0.478 to 0.779, Attitudes of Family (Parents) toward Science from 0.706 to 0.754, and Perception of the Science Teacher from 0.700 to 0.791. Utilization of the validated constructs within the short-form AASC-4 may help researchers and educators identify science education intervention features that have positive impact on youths' ATS.