What is interest and how has it been conceptualized and studied? -- What explains the power of interest? : Why are students who have an interest for content more likely to continue to reengage and develop more conceptual sophistication? -- What is known about assessing existing interest? How do new interests develop? How can the phase of a person's interest be identified and measured? -- What is the relation between the development of interest and other motivational variables? -- Is it a paradox that interest declines as subject matter gets more developed? What is "interest driven learning"? Does it matter if interests are taken up in rather than out of school? How different is an interest in one versus another subject matter, or domain? -- What we can now say about interest, its generation and development? What are the implications of knowing that interest can be developed? What could further research help us to understand?