Ashley is an undergraduate research assistant in a lab investigating preschool children's science knowledge. she is examining the items on the science knowledge assessments to ensure that they actually measure science, and not some other concept. what type of validity is she addressing?

Ashley is addressing construct validity.

Construct validity refers to the extent to which a test or tool is able to measure the constructs it is designed and intended to measure. In this case, by examining the items on the science knowledge assessments, Ashley is checking whether the tests, questions and other measures to be used in study are actually able to accurately measure preschool children's science knowledge.