Pretesting prior to a study session has been shown to benefit memory for pretested information compared to traditional study. While previous research has not found a detriment to non-pretested but related material, it is possible that taxing attention by increasing the playback speed of presented material could reveal such impairments. The current study (N = 239) compared multiple-choice learning from educational videos at 1x, 1.5x, and 2x speeds. Three videos (one at each speed) were presented after a pretest, for which half of the tested material was pretested, and half was not (non-pretested related). Another three videos were presented without a pretest (non-pretested). Benefits from pretesting and impairments associated with increased playback speed were observed, but no evidence of impairments to non-pretested related information were observed even at an increased playback speed. These results are inconsistent with an attentional account of the pretesting effect.

The aim of this diploma thesis is to prove the applicability of sociological methods in the research of audiovisual production. The theoretical part of this thesis is based especially on the approaches of the authors G. H. Gallup and R. L. Nafziger and further the methods used in the given type of research are described. Based on the proven empirical research, the subject of which is a trailer for the upcoming film Adam Ondra: Pushing the Limits and which used qualitative and quantitative methods, which were also described in the theoretical section, the thesis demonstrates the applicability and effectiveness of the use of these methods in research of audiovisual production. In the final section of the thesis, recommendations for optimizing the film trailer in terms of more effective targeting of selected audiences are proposed.