After reviewing previously published studies, psychologist Kyle Conlon and his colleagues wanted to know "Will people lose more weight if they maintain a goal focus or if they maintain an achievement focus?" At this point in their research, Conlon and his colleagues were completing which step in the scientific method?

Children whose parents had _____________ and who were adopted away as babies showed a tendency to develop psychiatric disorders only if they were adopted into dysfunctional families.

A. bipolar disorder B. schizophrenia C. obsessive-compulsive disorder D. depression

Kiera's asthma attacks increased substantially after she moved with her family to a big city. What is the most probable explanation for the worsening of Kiera's asthma?

A. high temperatures in the summer B. high degree of pollution C. lack of exercise D. low humidity