posted by Jennifer .
How has early memory research concerning the growth of cognitive perspectives in psychology changed over the course of the 20th century? What are the reasons for this change?
Do you mean "early" in terms of the research done for memory or in terms of the lifespan of individuals?
Since this historical aspect is not my area of expertise, I searched Google under the key words "cognitive psychology memory research history" to get this:
In the future, you can find the information you desire more quickly, if you use appropriate key words to do your own search. Also see http://hanlib.sou.edu/searchtools/.