Context: Instrument validation is an important facet of survey research methods and athletic trainers must be aware of the important underlying principles. Objective: To discuss the process of survey development and validation, specifically the process of construct validation. Background: Athletic training researchers frequently employ the use of survey research for topics such as clinical instruction and supervision, burnout, and professional development; however, researchers have not always used proper procedures to ensure instrument validity and reliability for the data collection process. Description: Four major methods exist to establish the validity of an instrument: face, content, criterion related, and construct. When developing a survey to measure a previously unexplored construct (eg, an athletic trainer's attitudes toward appropriate exertional heat stroke treatment), researchers should employ a four-step process: (1) defining constructs and content domain, (2) generating and judging measurement items, (3) designing and conducting studies to develop a scale, and (4) finalizing the scale. Clinical Advantages: Establishing the validity of a survey instrument strengthens the data yielded from the data collection process, which allows for greater confidence in the interpretation of the results from the survey. Conclusions: Construct validity, although a time-intensive process, is necessary to ensure accuracy and validity of the survey instrument. (Contains 2 tables and 2 figures.)