Abstract : Thanks to an experimentation, this research studies nonconscious effects of two broadcast sponsorships on attitude toward a new brand. This brand sponsors two quasi-identical broadcasts: there is almost only one difference between them, their emotional content. Effects are recorded with indirect measures. The impact of humorous broadcast sponsorship (with two exposures) on brand is manifest and positive. The sad broadcast has no influence: the intensity of emotions has produced irrelevant thoughts which prevent the processing of the closing credits sponsor billboard. Results are in line with the new familiarity-misattribution model. No automatic transfer of semantic attributes from broadcasting to brand image is observed.