High school level close reading project (Only three 1 paragraph answers are needed)

Read the article attached below and complete each part with at least a 5 sentence answer. 

Also, you need to provide specific examples cited from the study. You must also write in complete sentences.

Part 1:

 Write one paragraph on your observations and explanations of the author and timeline. .

Part 2:

Write one paragraph on your observations and explanations of whether bias is present. 

Part 3:

Write one paragraph on your observations and explanations of the study's data and conclusions.