Newborn infants are not capable of appreciating or disliking music, including heavy metal music. The preference for music is a cognitive ability that develops over time and with exposure to various musical styles.
Studies have shown that music can have an impact on the mood, emotions, and behavior of newborns and young children. However, this impact is not related to the specific genre of music, but rather to the overall musical characteristics, such as tempo, rhythm, and melody.
Research has demonstrated that slow and soothing music can help soothe and calm newborns, while lively and upbeat music can stimulate their movements and increase their arousal levels. However, this effect is not limited to any specific genre, and classical, pop, or heavy metal music can have similar effects, depending on the musical characteristics.
It is also important to note that a newborn's auditory system is still developing and maturing, and they are not capable of processing complex sounds, such as those found in heavy metal music. The sounds produced by heavy metal music may even be potentially harmful to a newborn's developing auditory system.
In conclusion, based on current research and understanding of newborns and their auditory development, it is safe to say that newborns do not have a preference for or against heavy metal music. The effect of music on newborns is not genre-specific, but rather related to the overall musical characteristics of the music. It is also important to consider the potential impact of loud and complex sounds on a newborn's developing auditory system.