The classic study of American institutions and culture, Democracy in America, was written by

Dr. Firstly conducts a study on the effect of stress on adolescents. Dr. Secondly decides to replicate this study using the same operational definitions and procedures but testing adults. This will be an example of

A) exact replication. B) construct replication. C) systematic replication. D) conceptual replication.

Americans became vitally interested in environmental issues in the

a. 1880s and 1890s. b. 1930s and 1940s. c. 1960s and 1970s. d. 1980s and 1990s. e. Twenty-first century.