1. Acquisition of a concept: Effects of mode of instruction and length of exposure to biology examples

   • John J. Koran
   • Mary Lou Koran
   • Patricia Freeman

   Articles Pages: 357 - 366

2. Pictures, repetition, and young children’s oral prose learning1

   • Joel R. Levin
   • Bruce G. Bender
   • Alan M. Lesgold

   Articles Pages: 367 - 380

3. Childreńs judgments of intentionality in moral dilemmas

   • Grant Stephenson
   • Donald Power
   • Mary Richardson

   Articles Pages: 381 - 390

4. Multivariable implications of an instructional innovation1

   • Lawrence Fraley
   • Ernest Vargas

   Articles Pages: 391 - 400

5. The importance of perceived task and type of presentation in student response to instructional television

   • Kenneth J. Ksobiech

   Articles Pages: 401 - 412

6. Projection variables and performance

   • Gene L. Wilkinson

   Articles Pages: 413 - 436

7. A major treatise on aptitude-treatment interaction research

   • John B. Haney
   • Richard E. Clark
   • W. Patrick Leonard

   Book Reviews Pages: 437 - 454

8. Research abstracts

   • Lewis B. Mayhew

   Departments Pages: 455 - 462

9. Letters

   • P. Kenneth Komoski

   Departments Pages: 463 - 464

10. General information

    Announcement Pages: 473 - 473