Javier's mother is a native spanish speaker, and his father is a native english speaker. he hears both languages equally often and is addressed in spanish by his mother and in english by his father. if javier is a typical toddler, how will his language skills be affected by this early experience

Javier's language skills being exposed to both Spanish and English native speakers at an early age will allow him to learn both languages without any difficulties. I think being exposed to multiple languages at an early age is probably the best way to learn languages and perhaps will allow Javier to learn another language when he is older more quickly than others who were not exposed to multiple languages at a young age. Based on my experience, the younger one is exposed to languages it seems more natural to learn different languages.