Donaldson refers to the work of Dr. Margaret Donaldson, a prominent cognitive psychologist who contributed significantly to the understanding of cognitive development, particularly in relation to and expanding upon Piaget's theory. Her research emphasizes the importance of social and cultural contexts in cognitive growth, highlighting how children's thinking evolves through interaction with their environment and others. This perspective aligns with the Neo-Piagetian approaches that seek to refine and build upon Piagetโs foundational ideas by integrating sociocultural influences.