The sex of a human walker can be recognized from dynamic point-light displays without relying on familiar cues. This study explores how dynamic point-light displays, which show the movement of lights on a walker's joints, can be used to identify the sex of the walker. The research was inspired by the work of Gunnar Johansson, who demonstrated that dynamic point-light displays can convey the motion of a person. The study involved multiple experiments to determine the effectiveness of dynamic point-light displays in sex recognition. In Experiment 1, six walkers (three males and three females) were recorded with point-light displays on their joints. The results showed that the sex of the walkers could be accurately identified in about 67% of trials for females and 72% for males. However, Walker 1, a female, was misidentified in 32% of trials, suggesting an anomaly. Confidence in the identification was related to the accuracy of the response, indicating that viewers were able to make reasonable guesses about the sex of the walker. In Experiment 2, static displays of the same point-light configurations were tested. The results showed that static displays were not effective in identifying the sex of the walker, with only 46% accuracy. This contrasted with the dynamic displays, which were more effective. Experiments 3 and 4 explored the effects of varying armswing and walking speed on sex recognition. The results indicated that while armswing and walking speed could influence the identification of the walker's sex, the overall accuracy was not significantly different from chance in most cases. However, walking at a faster speed was associated with better identification of female walkers. Experiment 5 examined the role of different joints in sex recognition. The results showed that any joint, whether upper or lower body, could be sufficient for identifying the sex of the walker. The study concluded that the sex of a walker can be recognized from dynamic point-light displays without the need for familiar cues, and that the recognition is based on the holistic motion of the walker. The study also emphasized the importance of the dynamic aspect of the display in sex recognition.The sex of a human walker can be recognized from dynamic point-light displays without relying on familiar cues. This study explores how dynamic point-light displays, which show the movement of lights on a walker's joints, can be used to identify the sex of the walker. The research was inspired by the work of Gunnar Johansson, who demonstrated that dynamic point-light displays can convey the motion of a person. The study involved multiple experiments to determine the effectiveness of dynamic point-light displays in sex recognition. In Experiment 1, six walkers (three males and three females) were recorded with point-light displays on their joints. The results showed that the sex of the walkers could be accurately identified in about 67% of trials for females and 72% for males. However, Walker 1, a female, was misidentified in 32% of trials, suggesting an anomaly. Confidence in the identification was related to the accuracy of the response, indicating that viewers were able to make reasonable guesses about the sex of the walker. In Experiment 2, static displays of the same point-light configurations were tested. The results showed that static displays were not effective in identifying the sex of the walker, with only 46% accuracy. This contrasted with the dynamic displays, which were more effective. Experiments 3 and 4 explored the effects of varying armswing and walking speed on sex recognition. The results indicated that while armswing and walking speed could influence the identification of the walker's sex, the overall accuracy was not significantly different from chance in most cases. However, walking at a faster speed was associated with better identification of female walkers. Experiment 5 examined the role of different joints in sex recognition. The results showed that any joint, whether upper or lower body, could be sufficient for identifying the sex of the walker. The study concluded that the sex of a walker can be recognized from dynamic point-light displays without the need for familiar cues, and that the recognition is based on the holistic motion of the walker. The study also emphasized the importance of the dynamic aspect of the display in sex recognition.