Identify the experimental hypotheses of the following article: Fetal brain growth and infant autistic traits by Fetal brain growth and infant autistic traits" is a research study published by a team of psychologists and neuroscientists led by Ezra Aydin, Alex Tsompanidis, Daren Chaplin, Rebecca Hawkes, Carrie Allison, Gerald Hackett, Topun Austin, Eglė Padaigaitė, Lidia V. Gabis, John Sucking, Rosemary Holt, and Simon Baron-Cohen.