Jr., H. F. O’Neil & J. E. Sieber 
Anxiety, Learning, and Instruction [PDF ebook] 

First published in 1977. Each of the authors independently initiated research to find ways of reducing the undesirable effects of anxiety 1 on intellectual performance. The aim of this book is to summarize the research and ideas that have emerged from these programs. It is both a progress report on the approaches we have developed for reducing anxiety or its undesirable effects, and a means of sharing our insights concerning better ways of accomplishing these goals in the future.