Read and discuss the vignette about Mark in Figure 7.3 of the Kampwirth text. How useful are the data Ms. Cassidy collected for understanding why Mark has trouble reading (i.e., problem analysis)? How useful are the data for designing an intervention? What about Mark’s ability to comprehend what he reads—should Ms. Cassidy have tested comprehension, too? How might Ms. Cassidy use this information to consult with Mark’s teacher?