Is there an authors who support that parenting involvement influence language acquisition in young children and what did they say? ?

Yes, there are several authors who have written about the influence of parenting involvement on language acquisition in young children. One such author is Betty Hart and Todd R. Risley, who conducted a landmark study on the topic. In their book "Meaningful Differences in the Everyday Experience of Young American Children," Hart and Risley found that children from higher socioeconomic backgrounds were exposed to more language-rich environments and had larger vocabularies compared to children from lower socioeconomic backgrounds. They concluded that the amount and quality of language input from parents and caregivers significantly impact a child's language development. This highlights the importance of parental involvement in fostering language acquisition in young children.