Learning (Behaviorism)
Thorndike and Connectionism (Instrumental Learning) The learning theory of Thorndike represents the original S-R framework of behavioral psychology: Learning is the result of associations forming between stimuli and responses. Such associations or "habits" become strengthened or weakened by the nature and frequency of the S-R pairings...
Edward L. Thorndike (1874-1949) "The mind is man's connection." Thorndike's theory and practical application.
Classics in the History of Psychology
An internet resource developed by Christopher D. Green  York University, Toronto, Ontario

This site provides the full text of Thorndike's theory of animal intelligence. The link takes you to a table of contents for each chapter.
Edward Thorndike is one of the first to study learning in animals following Ivan Pavlov's experiments. He created what he called puzzle boxes in which he would place cats. In order for the cats to eat they had to figure out how to open the puzzle box to get to the food dish directly infront. He kept track of the length of time required and the number of trials before the task was learned.Below are links that provide additional information on his work.