The term “psychometric technology” describes the recently achieved advancements in test administration, test reliability and item construction technologies (Arendasy, Som-mer & Hergovich, 2007). These include, inter alia, computer-based automatic generation of psychological test procedures with incorporated theory-based quality-control and a specifica-tion component to determine the item parameters. This should increase both the economic efficiency and the quality of testing development by keeping the item-dropout-rate of the test low and the quality factors high. In the present thesis a test (dubbed „Switch-Gen“) for the ability scope of attentional switching has been generated on the basis of these considerations. Based on a sample of 205 test subjects the test procedure which comprise of 420 items was evaluated using methods of the classical test theory and the item response theory (IRT). For this purpose a digital version of the d2 which has been developed in the course of this thesis as well as an adapted version of the WAFA were additionally implemented in the test battery (dubbed „d2-comp“ and „WAFA-K“, respectively). Structural validation was performed by the means of confirmatory factor analysis. The developed test procedure proofed to be very reliable and valid, the item-dropout-rate was near zero and the required psychometrical quality criteria were satisfied as well. Both the quality assurance component and the specification component met the specified demands and evidence for construct validity and criterion validity could be found. One-dimensionality and scaling were confirmed as well, Rasch-homogeneity, however, could only partially be confirmed considering the required categorization of the raw data. Furthermore, methodological boundaries and possible further studies are discussed.