Why is early childhood called the 'Toy Age'?

→ Which is the most suitable period for language learning? → Which of the following stages is crucial for 'Foundational Literacy and Numeracy' (FLN)? → Under Lawrence Kohlberg's Theory of Moral Development, analyzing the essential dynamics of both stages of 'Pre-Conventional Morality'—namely 'Obedience and Punishment Orientation' and 'Self-Interest and Exchange Orientation'—if a 7-year-old child acts with the motivation that 'if I obey I will not be punished' and 'if I share my toy with my brother, he will also give me his toy in the future', according to Kohlberg's moral framework, what type of psychological and cognitive perspective does the child's behavior demonstrate? → Which of the following psychological statements is most authentic and scientifically valid regarding the practical psychological implications of 'Insecure-Resistant / Ambivalent Attachment' and 'Insecure-Avoidant Attachment' propounded under John Bowlby's 'Attachment Theory', and the crises of 'emotional regulation' arising in students from early childhood experiences and the role of 'secure base' towards teachers in classroom teaching? → What is the time period of the third trimester of pregnancy? → By which name is the 'Adolescence' stage of child development known?