Who developed the Concepts about Print test?

The Concepts about Print test was developed by Marie M. Clay, a prominent figure in the field of literacy education and research. This test is designed to assess a child's understanding of the conventions of print, such as the directionality of text, the distinction between letters and words, and the ability to recognize that print carries meaning. Clay's work has significantly influenced early literacy instruction and assessment, particularly her emphasis on the importance of understanding the mechanics of reading before children can fully engage with the content.

In contrast, other figures listed have made notable contributions to education and psychology but in different areas. Louise Rosenblatt is known for her reader-response theory in literature education, emphasizing the interaction between the reader and the text. Lev Vygotsky is celebrated for his theories on social development and the role of social interaction in learning, particularly with his concepts of the Zone of Proximal Development and scaffolding. Jean Piaget is recognized for his work on cognitive development and how children acquire knowledge through stages, which, while related to learning, does not directly pertain to the specific assessment of print concepts. Therefore, Marie M. Clay is the correct choice as she specifically created the test in question.