Is a downwards head tilt a cross-cultural signal of dominance? Evidence for a universal visual illusion

The present pre-registered research provides the first evidence that a downwards head tilt is sufficient to communicate dominance from a neutral facial expression among the Mayangna, members of an unindustrialized, small-scale traditional society in Nicaragua who have had minimal exposure to North American culture. Consistent with the Action Unit imposter effect observed in North American populations (Witkower and Tracy in Psychol Sci 30:893–906, 2019), changes to the appearance of the upper face caused by a downwards head tilt were sufficient to elicit perceptions of dominance among this population. Given that the Mayangna are unlikely to associate a downwards head tilt or related apparent facial changes with dominance as a result of cross-cultural learning, the present results suggest that perceptions of dominance formed from a downwards head tilt, and the visual illusion shaping these perceptions, are a widely generalizable, and possibly universal, feature of human psychology.

Objective evaluation of optical illusion skirt based on image texture features

PurposeNowadays, most methods of illusion garment evaluation are based on the subjective evaluation of experienced practitioners, which consumes time and the results are too subjective to be accurate enough. It is necessary to explore a method that can quantify professional experience into objective indicators to evaluate the sensory comfort of the optical illusion skirt quickly and accurately. The purpose of this paper is to propose a method to objectively evaluate the sensory comfort of optical illusion skirt patterns by combining texture feature extraction and prediction model construction.Design/methodology/approachFirstly, 10 optical illusion sample skirts are produced, and 10 experimental images are collected for each sample skirt. Then a Likert five-level evaluation scale is designed to obtain the sensory comfort level of each skirt through the questionnaire survey. Synchronously, the coarseness, contrast, directionality, line-likeness, regularity and roughness of the sample image are calculated based on Tamura texture feature algorithm, and the mean, contrast and entropy are extracted of the image transformed by Gabor wavelet. Both are set as objective parameters. Two final indicators T1 and T2 are refined from the objective parameters previously obtained to construct the predictive model of the subjective comfort of the visual illusion skirt. The linear regression model and the MLP neural network model are constructed.FindingsResults show that the accuracy of the linear regression model is 92%, and prediction accuracy of the MLP neural network model is 97.9%. It is feasible to use Tamura texture features, Gabor wavelet transform and MLP neural network methods to objectively predict the sensory comfort of visual illusion skirt images.Originality/valueCompared with the existing uncertain and non-reproducible subjective evaluation of optical illusion clothing based on experienced experts. The main advantage of the authors' method is that this method can objectively obtain evaluation parameters, quickly and accurately obtain evaluation grades without repeated evaluation by experienced experts. It is a method of objectively quantifying the experience of experts.

STAGE MODELS USED İN THE STAGİNG OF THEATER PLAYS,DECOR AND STAGE DESİGNS

Stage design is the design of decor, costumes, accessories, lights, effects and all other audio-visual environments for the enactment of a theatrical play on the stage. Stage design is the general name of the design of all counted areas. This art branch, which started in the Middle Ages in accordance with today's understanding as stage painting and stage decoration in the West, lived its brightest and most glorious period in the 19th century. The stage mechanics created by applying it to scenes that could be created in the 20th century, by inserting the visual illusion on purpose, cause the audience to see these false worlds with surprising and astonished glances. Stage decoration is a branch of art that incorporates all branches of plastic art, especially painting and architecture, but its function is to create spaces that will provide the necessary action on the stage, in accordance with the drama text written by the author. However, today, it continues to function with a new structuring like other developing and changing art branches. Now the stage designer must have a very good art background as well as being a good İnterior Architect. Their current and social cultural background, which is sensitive to the problems of the country and world societies he lives in, is an important factor in the emergence of a good stage design. It is no longer a stage decoration that is suitable for the dramatic text and it’s visually is in the foreground, but a stage design enriched and meaningful with the artistic interpretation of the artist and the expression of his feelings. In this article, the applicability of the interior architecture process and stage design process in the field of theater plays has been tried to be revealed.

Dogs (Canis lupus familiaris) are susceptible to the Kanizsa’s triangle illusion

The ability to complete partially missing contours is widespread across the animal kingdom, but whether this extends to dogs is still unknown. To address this gap in knowledge, we assessed dogs’ susceptibility to one of the most common contour illusions, the Kanizsa’s triangle. Six dogs were trained to discriminate a triangle from other geometrical figures using a two-alternative conditioned discrimination task. Once the learning criterion was reached, dogs were presented with the Kanizsa’s triangle and a control stimulus, where inducers were rotated around their centre, so as to disrupt what would be perceived as a triangle by a human observer. As a group, dogs chose the illusory triangle significantly more often than control stimuli. At the individual level, susceptibility to the illusion was shown by five out of six dogs. This is the first study where dogs as a group show susceptibility to a visual illusion in the same manner as humans. Moreover, the analyses revealed a negative effect of age on susceptibility, an effect that was also found in humans. Altogether, this suggests that the underling perceptual mechanisms are similar between dogs and humans, and in sharp contrast with other categories of visual illusions to which the susceptibility of dogs has been previously assessed.

A BRIEF DISCUSSION ON THE MODIFICATION EFFECT OF VISUAL ILLUSION ON GARMENT STYLING

People's living standard is constantly improving, in the past such as comfort and warmth of these basic needs, has been difficult to meet the idea of today's people, those highlighting the personality and functional clothing, more and more recognized by the public.[1]Any figure can wear a sense of beauty, so that clothing to truly achieve the purpose of sculpture figure correction is a common concern of designers and consumers. By analyzing the law of optical illusion, this paper expounds the influence of optical illusion on clothing design, so as to make beneficial exploration on how to use optical illusion scientifically and better meet the needs of clothing design.[2]