Complex sentence: Beginning around 1967 Bruner turned his attention to the subject of developmental psychology and studied the way children learned and coined the term "scaffolding," to describe the way children often build on the information they have already mastered.
Split into simpler sentences: Beginning around 1967 Bruner turned his attention to the subject of developmental psychology and studied the way children learn. He coined the term "scaffolding" to describe the way children often build on the information they have already mastered.