It is currently debated which parameters of auditory and visual stimuli influence the perception of temporal order when such stimuli are presented in close temporal proximity. Previous research has demonstrated that the relative spatial locations and relative intensity relationships have an influence on the perceived temporal order. In a first experiment, using the method of constant stimuli, we examined the influence of stimulus duration and intensity on the temporal integration and temporal order perception for audio-visual stimuli by estimating the point of subjective simultaneity (PSS). Beyond the known effect of intensity, we found evidence that the stimulus duration plays an additional, and previously underestimated, role for the temporal perception of audio-visual stimuli. Another important debate in audio-visual integration is about in which way TOJ and reaction time (RT) measures tap same or different processes. To shed light on this relationship we collected also judgement times (JT) in the first experiment, and contrasted them with RTs derived from a second experiment in which participants were asked to give their speeded response with same stimulation like in the first experiment. Models for JTs and RTs will be proposed.