1. Hierarchical structures in expert performance

   • Thomas G. Dunn
   • Christine A. Taylor

   Research Pages: 5 - 18

2. Learning consequences for university students using computerized mastery testing

   • John P. Liefeld
   • Thomas F. Herrmann

   Research Pages: 19 - 25

3. Fifty-one families with computers: A study of children's academic uses of microcomputers at home

   • Joseph B. Giacquinta
   • Peggy Ann Lane

   Research Pages: 27 - 37

4. Hypervideo

   • Craig Locatis
   • James Charuhas
   • Richard Banvard

   Development Pages: 41 - 49

5. Interpersonal skill-building for instructional developers

   • Ruth V. Curtis
   • Darlene Nestor

   Development Pages: 51 - 59

6. Instructional systems design and public schools

   • Barbara L. Martin
   • Rebecca Clemente

   Development Pages: 61 - 75

7. A layers-of-necessity instructional development model

   • Martin Tessmer
   • John F. Wedman

   Development Pages: 77 - 85

8. Book reviews

   • D. Hlynka
   • Jerrold E. Kemp

   BookReview Pages: 87 - 91

9. G: An object oriented learning system

   • Mark Jones

   International Review Pages: 93 - 97

10. Educational technology in the Soviet Union

    • Stephen T. Kerr

    International Review Pages: 98 - 99

11. Research abstracts

    Abstract Pages: 100 - 104