For environmental programs such as water clean-up programs, trained observers might assess water visibility. For hiking and biking trail programs, trained observers might assess various physical conditions such as the condition of the trails and their cleanliness. A form of trained observer procedures has been used to assess the progress of clients of various rehabilitation and physical care programs, for example, to rate the ability to undertake activities of daily living. Exhibit 10 lists the basic tasks for implementing trained observer measurements. Program staff or volunteers (perhaps students from nearby high schools or colleges) might be used. For example, the Near Northside Partners Council in Fort Worth, Texas, trained more.
