Maya can multiply only single-digit numbers on her own, but with her big brother's close guidance, she can multiply three- and four-digit numbers together. What would Vygotsky call the difference between Maya's actual developmental level as determined by what she can multiply on her own and the level of potential development as determined by what she can multiply in collaboration with her brother?

MCQs on the key processes and issues related first to physical development, then to cognition (mental processes), and then to personality. Because development proceeds throughout all stages of the lifespan.