This technical report summarizes the statistical analyses used to determine how well the Measuring Activation (MA) instrument developed through the Science Learning Activation Lab project gathers appropriate information about the five dimensions of activation. The MA instrument was designed to evaluate the impact of science-learning programs and experiences on activation, and contains a series of survey items organized around five identified dimensions of activation. The five dimensions of activation are: fascination, values, perceived autonomy, competency beliefs, and scientific sensemaking.