Abstract: A modern test that takes advantage of the opportunities provided by advancements in computer technology is the multimedia test. The purpose of this study was to investigate the criterion-related validity of a specific open-ended multimedia test, namely a webcam test, by means of a concurrent validity study. In a webcam test a number of work-related situations are presented and participants have to respond as if these were real work situations. The responses are recorded with a webcam. The aim of the webcam test which we investigated is to measure the effectiveness of social work behavior. This first field study on a webcam test was conducted in an employment agency in The Netherlands. The sample consisted of 188 consultants who participated in a certification process. For the webcam test, good inter-rater reliabilities and internal consistencies were found. The results showed the webcam test to be significantly correlated with job placement success. The webcam test scores were also found to be related to job knowledge. Hierarchical regression analysis demonstrated that the webcam test has incremental validity up and above job knowledge in predicting job
placement success. The webcam test, therefore, seems a promising type of instrument for personnel selection.