The Attention Network Test (ANT) is proposed to assess the quality of three unique attentional networks: alerting, orienting, and executive function. The ANT is regularly used in the evaluation of attention networks; however, it’s reliability and construct validity remain uncertain. We investigated the ability of the executive function measure provided by the ANT to predict performance on other, more commonly used, measures of executive function. Also, using ANT datasets from over 300 participants, we analyzed the within-test reliability of the measure, relationships between the three attention networks, and interactions between trial types.