Whether voice pitch can influence how female faces are evaluated was studied by psychologists and biologists around Christina Krumpholz and Helmut Leder from the University of Vienna. The study was published in the journal Frontiers in Psychology. A higher voice does indeed influence how the corresponding face is evaluated. However, this does not apply to all ratings. Faces with a higher voice were rated as younger, but other assumptions that the faces are also rated as more attractive, more feminine or healthier do not apply, they concluded. 

Previously the focus of attractiveness research was mainly on the visual sense. Gradually, other characteristics such as voice or smell were included in the research. So researchers began thinking that the voice can also convey information about important qualities of the person. For example, in earlier experiments, a higher voice pitch in women was considered more attractive, younger, more feminine and healthier. 

In a new study, PhD student Christina Krumpholz, Professor Helmut Leder and their colleagues asked participants to rate videos of female faces regarding attractiveness, age, femininity and health. The voice pitch was manipulated in such a way that it was just perceptible whether the voice can be ignored or whether it inevitably influences the judgement.

It turned out that a higher voice leads to faces being assessed as being half a year younger on average. "So here the voice seems to play an important role that we cannot ignore when evaluating faces," explains Christina Krumpholz. It is different from the evaluation of attractiveness, femininity and health. Here the face seems to provide the crucial information, which is why the voice can be ignored and it does not significantly influence the evaluations of faces.

The fact that the audio recordings of higher female voices were not rated as more attractive than lower voices was surprising to the researchers. "This could indicate that we may need to rethink existing evolutionary psychological concepts and make more room for individual preferences and differences," Christina Krumpholz comments on the interpretation of the results. The research team will continue to investigate the role that different senses and their characteristics play in attractiveness evaluations.

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