TY - CHAP M1 - Book, Section TI - Validity and Reliability A1 - Norkin, Cynthia C. A1 - White, D. Joyce PY - 2009 T2 - Measurement of Joint Motion: A Guide to Goniometry, 4e AB - For goniometry to provide meaningful information, measurements must be valid and reliable. Currier1 states that validity is "the degree to which an instrument measures what it is purported to measure; the extent to which it fulfills its purpose." Stated in another way, the validity of a measurement refers to how well the measurement represents the true value of the variable of interest. The purpose of goniometry is to measure the angle created at a joint by the adjacent bones of the body. Therefore, a valid goniometric measurement is one that truly represents the actual joint angle. The joint angle is used to describe a specific joint position or, if a beginning and ending joint position are compared, a range of motion (ROM). SN - PB - McGraw-Hill Education CY - New York, NY Y2 - 2024/03/29 UR - fadavispt.mhmedical.com/content.aspx?aid=1137673594 ER -