If we choose participants in such a way that our groups are not equal before the experiment, we have which of the following threats to internal validity? A. Selection
B. History
C. Testing
D. Maturation

Writing prompt: read the article, “ending school segregation in the us.” why is the event described in the article taught in schools today? what are the lasting lessons that we can learn from studying this event? support your response with textual evidence. 1. read the article. 2. consider the answers to the questions. 3. use the race graphic organizer to organize your thoughts. 4. construct a paragraph using the race writing including textual evidence (see textual evidence notes for assistance with how to include this information) from the article and answers to the question. 5. check for capitalization, punctuation, and grammar.

Interest groups and political action committees are both types of organizations that

Wich of the following lines of poetry contains a simile