According to Piaget’s theory of cognitive development, the Formal operational stage starts at age________? February 2, 2021 / By Preparation Point / Pedagogy Mcqs Share on WhatsApp Share on Facebook Share on Twitter Share on LinkedInA. 3 B. 7 C. 11 D. 15 Share this:TwitterFacebookMoreTelegramWhatsAppLike this:Like Loading... Related Share on WhatsApp Share on Facebook Share on Twitter Share on LinkedIn